I would welcome an all-black suit again, but I actually don't see it happening. I still prefer the Burton suits to Snyder's. Maybe it's just because it's the first Batman I ever laid eyes on and it's the most iconic to me, but I think it looks cool AF on screen and really turns Batman into a creature of the night. Black and grey is cool too though, of course. I don't think we're going to see it revert back to old school rubber suits though, superhero costumes have come too far as have the audience's expectations for movement. Wouldn't be surprised to see some new type of innovation this time around rather than relying strictly on things that have been in done in the past for superhero suits.