Captain Carrot had a triumphant return in Multiversity #1 (well technically in Final Crisis #7). With Marvel's incredible success with Rocket Raccoon should DC keep Cap around to fill a similar niche as the company's resident anthropomorphic animal superhero? Or maybe keep him on Earth 26 but allow him easy access to Prime Earth/New Earth whenever a good story opportunity comes up?
They recently tried to introduce a sort of amalgam of both the original Captain Carrot and Rocket in the short lived space comic Threshold but that didn't turn out too well.
Captain K'Rot was kind of interesting but was really just a Rocket Raccoon knockoff. So DC is probably better off just using the version we saw in Multiversity.
"Who else wants to argue with cartoon physics!"