I think PC have an add-on that already allows them to instantly change to a preset build im not 100% sure but obviously on console we have no such saving grace.
All im suggesting is perhaps a crown store item that we can purchase and place in our homes, an armoury of sorts that we can save all of our current skills gear cps styles etc, if we have multiple armouries then we can switch between armouries if we want more AOE or single target dmg for example or swap to a healer or tank build, but even more importantly we can swap between pvp and pve builds instantly!
Iv seen a similar thing implemented into other MMOs and its been a brilliant addition, even so far as to adding a 1 min cooldown between switching whilst in combat so you obvs cant keep swapping mid combat but it can be really handy if say your tank dies whilst in execute phase and BOOM a DD can swap and help save the day, just adds a new dimention to the game.
Anyway hope you guys take note as it could be a great addition and also a $$$ maker for ZOS.