Allowing the use of the above command would make Creative more enjoyable, and more diverse. That way you can see what other people have built etc. I've been on many a servers where they do allow use of /setwarp and it's drastically improved the popularity.
Possible Pro: Role-play map designers will have something to use Those who want to show off builds can use as well Possible Cons: Trolling players will be able to annoy the player w/ the warp Players asking for a warp to be set on their plot If anything we could limit it to a donator perk so we won't have a butt load of warps set up. But that's not my call to make.