Never time left! I had such a long "nice to have" list :)
I meant as a random idea (no pun intended), you could offer something like 1% faster movement speed (99% chance of success), and allow me to gamble for 5% (80% chance), 10% (50% chance), etc., where missing loses the whole thing. That would heavily incentivize gambling once (almost guaranteed), and, I imagine, make folks want to push their luck. And avoid a coin flip to get super punished for wanting to explore a new mechanic you built!
Also, I'm curious, is the splash fx particles or sprites?