Well, you need around 6-7 million to finish your arena - that should be done as fast as possible and I doubt a newbie can do it in four seasons. I don't know about DIV IV and lower, but in DIV III the big arena was a big factor for me to catch up/overtake established teams.
If we only want to target tanking teams, there are other ways to hit them - and I don't see the difference between losing on purpose with a bit more expensive roster than it is to now.
In my situation a higher floor would only cost me 700k a week, effectively I would "only" make 2.8 million a season, while comfortly sitting on the second place in my division. With a bit more salary I'd be in the same place, not really a punishment though.
I think the economy has peaked and we don't need drastic countermeasures to deflate again. Maybe in a few seasons this could be a change worthwile to look at.
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