I have to agree there. Tropes are simply a tool of media and storytelling that allow you to 'shortcut' creating a character so that the audience can have an idea of expectations and situations, without which no sit-com (for example) would be possible. The TV Tropes website is awesome as a resource for documenting and explaining so many of them, be they character tropes, or situational ones. I believe that the criticism surrounding tropes is not for using them (as it is exceptionally difficult not to) but for failing to add twists and depths to that basic framework.
Of course Megan develops - that's her role. Your role as a protagonist in this (or any) story is to change things, make new things happen, otherwise there is no interaction. Any character that fails to develop from the protagonist's interactions is either just scenery, or a failure of the protagonist (and failing to change someone is in itself a trope - "Man, I guess he'll never change").
My issue is, I guess, more about casting and direction.
On casting, well, is Megan pretty? Sure. But she's not as pretty or even drop-dead sexy as Missy, and a glance at fan-art submissions shows I'm far from alone in that opinion. I find the in-game rendition of Megan to be fairly plain looking, very much 'girl next door'. Can she be provocative and enticing to be more attractive? Of course. But in a game-world, so could the Acting Teacher, and we've probably all played games that prove it. XD
So, I just think we need an in-game cue or clue as to why the character we're playing should see something special. Tell us she has amazing pheromones, or that she reminds us of someone we adore, just... something. Because in the first 3 chapters at least there is not one single clue as to why my character who seems to have an entire town of women potentially (or actively) interested in him, would even notice her much.
Yeah, I know ... some of you would tell me it's the gratitude. But all she did was call an ambulance and later check up on you. I don't know what countries you guys are in, but in most of the ones I know, to NOT call an ambulance would be an actual crime, risking claims of negligence. Meanwhile your character risked angering and interfering with a gunman who'd already smacked you down hard and injured you (in 3 choices of the 4 possible) to try to save her, with NOTHING in it for you. It's her that ought to be grateful really, and I'm not sure +2 RP really shows it. XD