Es Muy Bueno!
Its a nice concept that i haven't seen before, except in version 1.
I like it very much, but you could improve the gameplay a bit more.
Here are some ideas that come through my mind:
1. Campaign mode, where you can play different levels with difficulties.
2. 2 player mode (internet or just on the same pc)
3. More leveldesigns and playergraphics
4. Challenge mode (where you must achieve a special duty to win the game, like.. "be the first one who gets 20 coins" or "don't get a negative coin")
5. Time based mode
Hope these ideas help you a bit :) for maybe your 3. version
It's funny!And cool made.