I think I was looking at $800 for the upgrade. Already got 11 sp cranks and front derailleur.
Ergos and RD and cassette were in my watch list. Decided to wait even though I like the Gumbys (also running 10sp Centaur).
Unless you really need that extra gear, I'd pass, and wait for 12.
For where/how I ride now, as long as I got 15, 16, 17 in back I'm okay. Running a 13-29 now (used to be 12-26).
Instead of going to 11 I upgraded wheels instead.

11-12 speed actually makes more sense on my 1x.