I also like Sweat but normally I use the Air Base Stage. Theres alot of Space so it kinda mimics the Dojo but eventually you do encounter a wall so you can test wall stuff too. Unfortunately its not perfect.
The walls are electrified so I'm not getting standard wall combo damage results and theres no invisible walls. Thats when I swap out that stage for something like Temple of The Dragon and Sakura. I don't train on slanted surface stages. Those I just go by feeling when I'm in an actual match.
I do like that stage as well but I feel the ground is not entirely flat so it could be that some setups or combos work on that stage which wouldn't work on other stages with flat ground. I'm not sure if that is true though, but that is my suspicion.
TOTD / Sakura is awesome too! I pick that one from time to time. You can practice open space setups, wall setups and breakable object setups, pretty much anything you need. And the stage looks beautiful!
Oh and one more thing. I always train on the right side of the screen simce thats my weaker side. I only wish I could do the samething on Combo Challenges.
It's really useful to practice on both sides! There's a lot of throws and holds that swap positions so it's always good if you can do your setups and combos on both sides. I agree that P2 side is my weaker side too, some inputs are awkward to perform on P2 side.
You know those really hard combo challenges (the type you only do once) like Eliots Choryo or Brads/Rachels PL Combos....... sometimes when I'm bored I try doing them on both sides.... then I head into training mode and see if I can do it on Mid Weights.
For me, it sort of depends on what I'm training.
Tech and non-environment combos? Dojo.
Environmental combos and hazard combos? Fireworks, Home or Sakura, or just the star I'm looking for tech or combos for.
Wall tech and combos? Sweat.
It depends on what I'm practicing, if I'm just messing around with juggles or combos I use Dojo but I'm trying to perfect Danger Zone/Enviroment stuff I use a stage better fitted for that.