Personally in DAO and DA2 I didn't think any of the characters were overly sexualised at all. Even Isabela, because the characters that did have strong sexualities worked because it fit their character.
I didn't object to Isabela.
I did however object strenously to Miranda, Samara, ME3 Ashley, and Sexbot Edi and her fricking ******. Why you might ask?
Isabela was just as "revealing" in her outfits as Miri, or any of the ME women; and yet I object to them and not her? Hypocracy! Heresy! Idiot!
It has to do with the presentation of the character. Yes Isabela was a sl*tty pirate wench who wore revealing clothing, but being a rogue and a duelist her outfit made sense both in context of her character and from a pragmatic, functional point of view. Also DA2 didn't have any points of the game where you pretty much had close up shots of her t*ts or bum.
Compare with Miranda, and Samara in ME2, Miranda, and Edi Sexbot in ME3. And with Ashley's ME3 look and her suddenly bigger b**bs.
In ME2 there is hardly a scene goes by with Miranda where the camera doesn't at least once do a close up shot of her backside or her chest; and it's the same in ME3. Not to mention her outfit is horribly impractical in combat situations (seriously she runs around in heels!); and would not protect her in a hostile environment.
Samara isn't subjected to the same type of egregious treatment as Miranda (both Miri and EDI are female like beings that are objectified for fanservice reasons) but her outfit is every bit as impractical and ridiculous as Miranda's (and Jack and Thane's too).
In ME3 because Miranda isn't a companion, and EDIsexBot is, it is EDI that is subjected to the gross objectification and fanservice (and it isn't even equal opportunity fanservice cos none of the Male ME characters are EVER treated like that - the closest is when ManShep checks out Kaidan's bum when hes romancing him in ME3) that Miranda was in ME2, and continues to get the very few times she appears. Also that horrific ****** in EDI's alternate outfits.
And Ashley; her new look doesn't even make sense. It doesn't fit her character, and it is strange that her b**bs are suddenly a LOT bigger than they were in ME1/2. And her outfit is also horribly impractical.
Personally I don't mind if Bioware "over sexualise" characters if they want to. As long as it is equal opportunity oversexualisation, and fanservice. You want to include a Miranda/Isabela like character and have camera shots of her backside and b**bs?
Absolutely fine by me; as long as you do the same for a fit male companion character; ie a Male NPC companion gets shots of him with his shirt off, or in just his undies. Close up shots of his bum, or crotch. And so on.
For me it's an all or nothing thing.
If you wanna serve your fans with a bit of titilation and harmless "sexy" camera shots; then go ahead. Brilliant.
Just don't cater to only the Str8 Male demographic. Service ALL your potential fans.
Like in Final Fantasy 13 when Snow has his top off for like two whole chapters. And Fang with her rather revealing clothes for pretty much the whole game.