you want to be a social game? Then allow TEAMS to buy donuts, even at a ridiculous price (100 000 coins for a single donut?? increasing cost?). teams only, not players!!
+ if you want it!!
+
there should be a way to restore your lost hit point, or at least a run button! it is stupid to start a fight, realise you're bound to lose it, be slaugthered without being able to move and even suffer penalty for it... it gets boring!