I saw this topic, and thought it would be really fun, though I feel that I won't be online constantly though...cause I'm a bit of a...hikikomori, IRL and on the internet.
I don't really have a main character, I tend to play them all equally (I press the random button), but I tend to favor Sakuya and avoid using Reimu (or at least avoid using her and the Fantasy Heaven spellcard). Although, when I feel like being a butt, I'd use it. I guess I'm sort of a jack-of-all trades, master of none (especially Alice and Yukari. I find playing them to be complex. Doesn't mean I neglect their characters though) kind of player.
My skill level...could be better. I mean, I can get by the AI...not that it's very intelligent at all. I've played for a little over 4~5ish months :V