I saw your track via the post in the NGAUC thread. Don't worry about whether the genre is popular or not. The point of this place is to create and share content suitable for use in video games, and to that end, you've succeeded! This track would be right at home in any number of Nintendo games, Final Fantasy games, and so forth. I think some people take for granted the challenge involved in writing spirited and light-hearted tracks like this one. I know it's a skill that I sorely lack.
Mix-wise, I have no problem with your use of reverb. I don't think your brass parts really move with enough gusto to be muddied by the 'verb. If you ever do write a track where you want reverb on low strings/brass that play very quickly, you can just high-pass the reverb return channel or the bus being sent to it to help clean it up. The only thing I noticed that I think I would change is the primary flute track volume. The part itself sounds great, but kinda dominates the field once it jumps in. Maybe try cutting it a few dB at a time until you can still hear all the inflections that you want heard.
Great job, keep cranking em out!