Something I posted in another thread a week or so back about my thoughts/hopes for what changes they might make to the Batsuit:
I really don't think they will (or should) change the cape/cowl colors to navy or blue in this series. It would be a little to drastic and seemingly unnecessary, especially because the black on this Batman serves as a really nice contrast to the shades of blue that can be found on Superman and Wonder Woman.
The basis of this Batsuit is pretty much as close to perfection as they could have come. It's inevitable that there will be small tweaks in the future, but I feel that they will (and should) keep the core foundation of this suit.
I think the next logical steps for the suit, moving forward, would be to make small tweaks that serve to "refresh" this Batsuit and make him come off as a little more clean-cut and advanced -- which would seemingly be in line with the character development of this Batman through BvS and beyond. Slim down his overall body size ever so slightly, shrink the Batsymbol just a bit, remove the "scarring" on the symbol and belt, lighten up the bronze on the belt ever so slightly, make the bodysuit material look a little less worn down and repaired, and maybe modify the aesthetics of the belt and gauntlets.
But overall, as I said, they really should keep the general aesthetic of this Batman as he is now moving forward because they hit this one out of the park on the first shot.
It's funny, because usually we'd have a long list of things we really want them to "fix" in the various sequels that will follow, but in this case, there's not much (if anything) that NEEDS to be fixed.