welp, I like Tali because I find her charming and intelligent, the sort of individual that I myself wouldn't mind hanging around with or getting to know more intimately. So by saying this, I mean that her having a mask over her face isn't really the reason that I chose to get to know her. I wasn't really disappointed with not getting to see her face in ME2 because that's not the main reason that I selected her as a romantic partner.
I think that they should show her face, because personally, I'm not a particularly weak individual who can't handle dashed expectations, even if my expectations are relatively low to begin with. I know that whatever face they choose to use, I'm going to say that it's too human. Weird freaky alien face doesn't bother me, because after all, aren't we supposed to embrace the idea that it's the personality that matters? That's why it won't really bother me in the long run if her face is practically human, either.
At this point in the game, whatever BioWare chooses to do with their own intellectual property is at their discretion and will leave the same number of people disappointed in the end. So for every person that says "I'm glad that they didn't show her face so my expectations get didn't get dashed," someone will feel gypped that they were never given the opportunity to and in turn have their own expectations dashed.. The same goes for if they choose to show her face.
My vote goes to yes, show it.
EDIT:
spartan231490 said:
I choose to know the truth, not sit in wonder because I might not like it.
This statement is brilliant. I agree with it completely.