The problem is the floor. Teams that do not build early (genuinely new teams) will bankrupt. I agree with your suggestion even, there are a lot of ways to go about it. But the problem is, they do nothing.
I don't know if they go bankrupt and I don't want to do the math...
But adding like 5k seats to an Arena for DIV II beginners might not hurt the fun in the Long run. The sooner those Teams catch up, the better (especially for established teams who get bored by abusing the bot/new Teams).
Größter Knecht aller Zeiten aka His Excellency aka President for Life aka Field Marshal Al Hadji aka Lord of All the Beasts of the Earth and Fishes of the Seas aka aka Conqueror of the Buzzerbeater Empire in Europe in General and Austria in Particular