Hey! Thank you for the feedback! Regarding the drop mechanic, once you start reaching those +13 levels, its most important to try to clear the board in such a way, when you get to the dropping phase that you can build those large clusters of colors ( +2000 coins ). So even if its only just one color, it can give huge advantage to the next round. :)
If we are going to work on this further the dropping mechanic will definately be something we will look into :)
Thanks for playing!