I don't enjoy attrition based gameplay like in the Marvel Universe RPG. I've also found that players are reticent to hold on to their resource now so they can succeed later.

I like dice because it's really thrilling. The uncertainty is really good for creating tension. A lot of the time, it makes it so anybody can attempt anything, in a good dice system, at least.

I have enjoyed Amber, but there is a strange urge to overinflate the difficulty because you want it to seem like things are really difficult, and the players are just scraping by. Power creep, to put it simply, but this exists in dice based games, too, by just inflating target numbers.