This here is the main thing. Valor will be nice for the NEXT patch. Right now it might be nice sometimes. But you can’t stress it.
This expansion, I’m just taking what I can get and having fun with friends. Trying to pinpoint a piece is going to drive you nuts.
However, Like someone else said, you can always spam m0 or low levels, which go faster and are far less stressful, and upgrade the piece the long way. If you already have it, though, it’s going to take time just to get it back to where it already is, before you progress.