Only glanced at this but I think this would also impact on the game mechanic for unsigned players from 1 season to another.

I have one guy in particular on my main team's server who buys up FAs obsessively so I can understand the problem but fortunately he doesn't come on until 4pm my time so I can pick up plenty before then.

If there was to be a limit I'd suggest it was on the number of TM transactions for FAs at bid stage, but tbh I've not thought it through.