You can at least give a reason why.
Grinders won't work since they nerfed mobs able to swim in water. It apparently causes "lag".
Tbh, if they un-nerfed mobs swimming in water, then grinding would be much easier. I used to go to this one player town with a huge grinder. They allowed access to everyone, so I went there and made my enchanted books and whatnot.
I like this idea, but for now, I'm at +/-.