I prefer the randomness of the dice to the non-randomness of the event cards. The special effect each turn doesn't really add anything to the game IMO. However, if some anti-dice player insists on using this, I'm up for it.
Multiple plays. Least favourite and least necessary expansion. The ramps are quite tricky to get up and some players can fail to get up the ramps to the top level. Having another level is actually a bit gimmicky and doesn't add much to the experience. Using the ramps simply to make a mega jump is pretty cool.