Its probably safe to say, whatever gear comes out with the red scrips addition... that will be the time that whatever the "bis crafting gear" is, will last awhile and should meld then
Also, its most likely safe to max meld accessories currently
P.s. I dunno about you, but I doubt I will be using V materia for a long time unless there is a way to get them easier (maybe red scrips!?). Not sure I'd like to shove 3mil materia into a socket any less than 100% and even then I think I'd go with that 3mil
V is technically out atm, and if you check the boards, they are averaging 2mil+