For starters (and judging from the demo: + Mouse control for menu + better interface + some basic settings + a little explanation on what is going on (not that critical though) + coin consume effect and maybe a little sound + some indication on what those points are good for + some level finish screen
Okay, thanks for the more detailed response. Mouse control and basic settings are already on the table for the greater project; the others do not actually fit in with what I'm going for here, but thank you for your feedback.