Well, you can't forget that they've actually showed her in Val Royeaux, willingly offering Inquisition help with the mages before Alexius hopped through time to change events.
And considering that Venatori likely stoop to blood magic AND may as well got help from Nightmare demon to play on Fiona's fears and...I'm not really that surprised that she caved in. Desperate people do desperate things. In Inquisition/DA that's basically a theme.
Oh yeah, it makes sense - I played the Templar playthrough much later, so I was aware of all the blood magic/demon stuff going on in Redcliffe, it's just the equivalent enemy if you sided with the mages was a new character - Knight Captain Denam - who I had no such reason to care about, in comparison to Fiona, who is an important character in the books & wider universe.
It was strange how little Lavellan responded to insults against her elfiness. I wanted to play a super abrasive, team Elgar'nan, screw all you shems, type Lavellan. Instead I was forced to be respectful of everybody's religions while they laughed at mine. Sure, the Dalish beliefs are wrong, but so are the Chantry beliefs. I didn't even get the chance to laugh in their faces because the blight predates the magisters, why am I being forced into playing as a nice guy??
What gives Bioware? Where's my racist renegade Lavellan?
Oh man, this is why I gave up on my SUPER SUPER DALISH Sera-mancing Lavellan. I was expecting an option which allowed me to give the verbal equivalent of the middle finger when those questions came up.
I always felt that the Inquisitor was far too polite.
Speaking of Samson - he's another character that got screwed over by the writing. Cullen gets a redemption plot (despite not actually feeling much guilt over what he was complicit in during DA2) and Samson is treated as an irredeemable monster (personally, I think the plot would've worked better if Cullen was the leader of the Red Templars and Samson was the Commander of the Inquisitions forces).
Agreed 100%
I think it would also make more sense for Cullen to be vulnerable to red lyrium addiction given that he was Meredith's second for many years. Samson was no more an addict than every other Templar, really. I also think it'd have been awesome if Samson would have had an off-screen redemption arc - which becomes clear in his dialogue - where after Kirkwall was torn apart, Samson decides to protect Maddox & others when no others didn't, which leads him into helping & protecting others who are left behind by the rebellion - tranquil, young or non-combat mages, defecting templars, etc. It'd give him a motivation to be close to the conclave - and thus gets involved immediately when sh*t hits the fan because helping out when he's needed is what he's been doing for months, and besides, he doesn't trust Cassandra for a second, he's keeping an eye on what the Seeker is doing (and he rapidly comes to respect her motives and her resolve). They would be so antagonistic at the beginning, but I reckon they'd get on really well by the end; it would have been lovely to see.
It would have been interesting to see the Inquisition as an amalgamation of forces, like several groups from different factions coming together for a truce in order to deal with the breach/rift situation. Not a chantry-led endeavour, but they are the strongest faction. It'd possibly be a multi-race effort, explaining more readily why a non-human Inquisitor would make sense/be involved.
Samson would make an excellent balancing force in general. You'd have a pro-mage templar who is very critical of the chantry - and perhaps ensures that the Inquisition isn't an exercise entirely carried out by them. Also, his dry sense of humour would have made a wonderful counterpart to the boundless optimism the Inquisition represents. I love characters like that (he reminded me a lot of Loghain - limited screen-time, but made a great impression on me for however many moments he wasn't villain-ing). Plus, with Samson, you'd get to see his interaction with Maddox (!). Despite the fact that this game followed on from the events of Asunder so strongly, there was a lack of discussion of tranquillity - except in Cassandra's personal quest. If that wasn't enough of a motivation, we'd get more of Gideon Emery's voice acting, which is always a YES.
I think Cullen would also make a very interesting villain to be honest - for one, he's golden boy, he's representative of the perfect templar - dedicated, faithful, serious, willing to do what it takes - and yet he gets pushed and pushed into this route. I wish the Red Templars had more to them to 'addicted/crazy people and/or crystal monsters', and I think having Cullen at the helm could have the potential to do that. I would have loved to see Corypheus manage to manipulate this group of hardline, Meredith-esque Templars with a determined Cullen at the helm, disguising his own magic (somehow?) and using them as tools which he'd dispose of once he'd cleared out the opposition by denying them their lyrium - teaching Cullen the hard way that Templars are just tools which are to be disposed, by the chantry or otherwise. I would hope his personal quest would touch on his PTSD as well - Cullen, despite having stood watch to some awful abuses as Meredith's second, still has gone through an awful ordeal and that needs to be represented. I think that would have made a much more compelling storyline whilst retaining much more balance.
... dammit, I really want this now.