I know, it's a fundamental thing, but:
Whenever you start something new (dynamics, cloth, materials, voronoi fracture...), you should be able to start from presets that mimic real-world behaviour.
It's sooo tiring to fiddle a way from a basic setup to something convincing.
Of course, there must be be freedom to explore every setup imaginable -- but I think, it's much easier from a user's perspective to start from "real world" and work to something abstract than the other way around...