Simple as this, Prizes with Levels, a probably solution to Smurfs and also a motivation to keep playing.
Nothing much to say.
TRUE 1675 MMR:
Would be nice, currently you only get a higher silver coins amount when you get to certain level caps.
Would be nicer to see this tweaked into something like : lvl 25> get a free icon of choice (higher priced/specials excluded ofcourse). lvl 30/35 > gain x amount of golds coins. the higher the level the better the price ofcourse. No "special" prizes for accounts below lvl 20/25.