Smeelia wrote...
Well she has killed people over the course of 400 years and perverting a village to make live sacrifices to you then turning them against a Justicar knowing they'll die just so you can escape seems a little worse than merely killing them (Samara spares the unaffected children as well remember so she's not just killing indiscriminately). Morinth hasn't succeeded in killing Samara either, even when she had an entire village of people fighting for her (while Samara has only ever been fighting alone until now).
Samara has killed for 700+ years and evrybody on your squad has done a lot of killing.
Samara could've left the village alone but Samara chose to attack it.
So Samara can do something evil, but if shes does something nice later on its OK

Morinth was trying to escape , she wants to live, she knows their is a 50/50 chance she might win or lose.
It sounds a lot like mind control from their comments, kind of like the reaper indoctrination in some ways (a subtle aura type thing). They don't know why they feel compelled to like her but they do, I think Nef's journal even says something about her "crawling inside my head" or similar (although I can't remember the exact wording so I could be wrong). She does have the "Dominate" power in game, which shows she's quite capable of forced mind control (and that's the main reason to take her along, Shepard is more than capable of being charismatic and leading people).
Morinth is sexually attractive people are going to be attracted to her. At the nightclub you don't see hordes of people vying for attention.
Nef was falling in love with Morinth. It haapens in human relationships also, some people aare obsessesd at times

Dominate was included for gameplay purposes.
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Shepard can easily see Samara in action prior to her loyalty mission so there's no reason to doubt her ability (infact your introduction shows her to be fairly strong). The only experience Shepard has of Morinth's powers is them not working. If you assume that the victims Morinth has had in the past were just drawn in by her charisma then there's no evidence that she's ever successfully mind controlled anyone since she might have just tricked them into doing something which seemed perfectly natural (the Asari keep Ardat-Yakshi a secret so it's very unlikely that any of her victims even knew about them let alone knew that she was one).
Have I ever doubted Samara's ability?

Samara took down those Eclipse grunts by herself, yet she needs your help to break the stalemate.
Morinth has a very persuasive personailty she's very seductful. Humans do the same thing also.
The point is that Morinth isn't bothered about the suicide mission (infact it seems unrealistic that she goes along with the mission considering how much of a risk it is to her, perhaps she thinks that Shepard is a valuable enough "prize" to take the risk) and is willing to put it at risk to get what she wants if you give her the chance, while Samara is willing to swear an oath and put the goal that has been the focus of her life for some 400 years aside because she considers the mission worthwhile enough (you don't have to do her loyalty mission, she just asks you to).
A favor for a favor.
Morinth has a personal motivation to make sure that you succeed. Just like Liara had a personal motivation to save you from the Collectors.
There's plenty of non-metagame evidence that Samara can be trusted to at least finish the mission such as information on her and her code from other characters. Infact, it's probable that Shepard would have access to more information than the player does. Plus you get an opportunity to get to know her and see her abilities and there's nothing that suggests she wont stick with you to the end in your dealings with her. You barely meet Morinth before making the choice and your only experiences so far show that she is definately a cold-hearted killer, there's really nothing to suggest she's anything but dangerous. At least with Samara you have a dossier, with Morinth all you get is the word of an untrustworthy and manipulative murderer.
Samara is just a gun for hire. Nobody outside of Justicars know the Justicar code.
You barely meet Samara before you recruit her.
Samara has a non-biased dossier given to you by Unethical Cerberus, while Samara gives you a biased dossier about Morinth.
Samara is also a cold-hearted killer.
I can't blame you for not liking Samara, on a Renegade playthrough her threat to kill me seemed totally irrational given that I hadn't done anything beyond what she'd do (there's no guarantee that you're evil just because you're a Renegade). Her code is very rigid and that makes it tough to get past (unless you really like the idea of the code). She seems like a decent enough person behind the code but she's almost hiding behind it to avoid having to make any decisions and risk being "wrong". Even Paragons have reasons to dislike her since she tends towards Renegade actions (she even says she'd kill innocents if her code tells her to).
Main reason I don't like Samara is the depth of the Justicar code and she's the only one that knows it.
Don't judge me Samara I'm trying to save the Galaxy

I think Morinth is an interesting character with a lot of potential (not that I don't like Samara as a character), it's just that the in-game presentation is terrible and requires Shepard to make some silly decisions that fly in the face of all sense and available information in order to recruit her. Someone suggested in another thread that it might have been better to meet Morinth first and Samara later and I could certainly see that working a lot better (although it could easily end up reversing the situation and making Samara difficult to recruit). A kill both option would also be a nice addition (Jack has the biotic power covered anyway, not that she's stable either).
I wished Morinth had more dialogue
Morinth could've been a Cerberus agent you recruit on Omega who's loyalty mission is to kill her mother who's a religous fanatic and hunting Morinth. You take Morinth to Illium, and you try to find Samara who's assaulting the Eclipse Base looking for information on the AML Demeter.
I just don't think she's presented as having enough power more than Samara to make that worthwhile and you're basically recruiting a dangerous murderer (one that wants to kill you and would have done a moment ago if she could have) on little more than her word. I can understand wanting to get rid of Samara but recruiting Morinth just doesn't make any sense at all in-game (unless you're just playing an evil and destructive Shepard).
Shepard takes a risk everyone they recruit, you don't know just how powerful a squaddie is unless you bring them in your squad or see them first-hand.