I *think* their rational for why it's always an item is that new players will be confused why some modes have redeploy active and some modes don't. So the solution to this is make it an item across all modes, so it's obvious that redeploy will always take an item slot. Also if they get used to always having redeploy without it taking a slot they will instinctively dislike modes where redeploy is not active, which hurts the game.
Yep, that’s pretty much it. We will still probably bring back Soaring versions of some of the modes. Who knows, maybe we will try Soaring Rumble one day and see how it goes in terms of players face planting.