I remember the first time I moved to a rack system. I had 6 ball pythons by that time. I built two 5 tub racks so they only stand 4ft tall. It also gave me the opportunity to buy 4 more snakes. I still have room for one more and plan to fill it at the expo on the 2nd of May
You can use decor in your tubs all you want. I do for my most shyest snakes (there is only two but whatever works). Ball pythons seem to like cramped spaces. As long as they have room to move around they should be happy.
When I first started to use my racks I was surprised how much easier they are. Humidity is easier to keep up, and I have not had one shedding issue since. Heat actually stays in the tubs. Cleaning is so easy. The tubs basically weigh nothing so taking them for a hot shower is a cinch and I know some snakes can create huge messes.
I know I would read and watch videos with people placing snakes in these dark, small tubs and I used to think it was unfair for the snakes. But now that I have tried it, the snakes seem just as happy and I am happier.
Either way works, yes but I have to say the rack system is great.