Not sure how I've missed out on this, but now that I've found you
I'LL NEVER LET YOU GO I can stalk...er, follow this thread carefully to monitor your activities. *____*
Lol, anyways....in regards to your questions:
1) Would you play this - even if the protag is a little questionable? >_>
Lol, yes! Questionable characters are always kinda fun to play! ;D Plus, Mira's character description sounds like she's a fun, spunky girl, and I love protagonists like that! ♥ One word of caution though: "Questionable" is good, but "stupid" is not. Some people I've seen try to make their characters "different", and they end up having them make stupid decisions or say dumb junk. As the person playing and seeing the world through the protagonist's eyes, it's irritating if the protagonist does/says uber dumb junk. If you make them do/say questionable things, please make it reasonable/realistic! >.< Flirty is fine, but dumb-ditz is not. ;P
2) Do any of the characters catch your eye? Also why 
I REALLY love the artwork for all of them! Mira's so pretty, and her personality adds onto that. =) In the guys, I like Kiron and Daire, especially Daire. Wow, he's so hot. *__* I'm not the type of girl who goes for the glasses look, in fact, I usually don't pursue those guys at all. But Daire...wow. He's so beautiful. He looks like an angel. Oh glob, I'm fangirling over a CG. xS
3) Are you disappointed in VO having no mini-games? (there may be something that we're adding called M-mode but that's still in the works for now)
No.
Most of the VNs I play are just straight-forward text/decision-based, and I actually prefer VNs like that. IMO, mini-games sometimes detract from the fluidity of the story. Cuz it's like you're playing through a story and learning about the plot and characters and etc, and then all of a sudden..."
Find 10 paintbrushes in this scene" or "
Find the differences in these 2 photographs" and I'm like "Wat?!" x( So no, I'm not too disappointed. =P
I'm really looking forward to this, it looks like super fun! =D Good luck on development! n____n