Hi just played the game and I like it! Keep it going her are some ideas if you continue: 

• Player skins
• different plattforms with different behaviors
• Upgrades (to jump further or faster)

I think adding different types of platforms sounds like a good idea to bring more variety to the gameplay, I'll look into that. I've just worked for a week on this game at the moment, I plan to create a better player model, add a currency and different skins to motivate the player.

Glad you've liked the prototype and thank you for your valuable feedback!