Only if you're super campy and paranoid about going anywhere.panda so your saying we have to sit there the whole match instead of fighting?
There are 27 different stage designs, all rotating at 13.33 second intervals. In an 8 minute match. Only 6 do damage, and in an 8 minute match, you'll, at absolute most, you'll run into each one, or alternatively, none of those 6 at all. By themselves, they can't KO unless on high to very high damage. There is time to react when the stage transforms, and if you get thrown/hit into one, it's just the same as getting hit into any other stage hazard (such as Green Greens bombs)