Well, for an economist like myself this seems like a pretty simple solution, which kind of makes me wonder why the heck Nordeus didn't do this from the start.

Instead of using Team Strength at End of Season, the game just needs to use Average Team Strength on Previous Season to avoid most of the exploiter tactics. I tried this myself (manipulating seedings) a few seasons ago, and its just too simple and too powerful. I won all games, treble, suffered 3 goals in 50 matches, scored almost 200. No fun at all, to me and to all the fair players you ended up having to play with my exploited team. Just bought a ton of crappy players in the last day of the season and sold half my starting 11. Tanked from 119% to 52% in a day...

If Average Team Strength on Previous Season had been used, my efforts would be pointless, as I would had been seeded as a 115% team and would be my ass the one destroyed. A lot more fair, since I would had been the jerk that decided to sell my best players. As things are, is total upside logic and I think it gets super annoying for older players, unless you have low self-esteem and really need a lot of TE silverware to make you happy.

My 2 cents about this one.