Hiding content behind gimmicks is the biggest reason I never get into Thaumcraft. No insult meant to Azanor, he's a very talented developer and his mod has great potential power, but the research mechanic is just another annoying gimmick, to me.
Thing is, Thaumcraft research isn't RNG. You know the aspects that are required, and if you want, there are many "this is how to do it" screen shots or even the "Thaumcraft Research Helper" http://ythri.github.io/tcresearch/
Plates are totally RNG.
Again, please don't think I'm hating on the mod, I will end up using it, and will probably enjoy the non RNG/grindy parts a lot!