Great game, very addicting 5/5. I'm hoping there will be a sequel! If so, I did have a few suggestions. First, might I suggest each hero having two weapon slots, one for range another for close combat, ranged weapons being weaker and melee stronger for the champion horseman so that those two don't end up just sitting there without support while being bombarded at long range. Second, you should still be able to place support characters like the mages even if the wall is destroyed (drat those catapults). Third, maybe allowing the special tiles to be put in a separate slot, since sometimes you want to keep those special ability tiles for a rainy day, but you don't have any other matches to be made so you have to either sit there and wait or use it when you don't want to. Great work though!
Very addicting game, although I think I found a way to get as much money as you need. Take the Reporter and the City Chief to anyplace that you have already done, jump on one square, and then end the day. You end up with $350 at the end of each day.