What is the real purpose? I always thought collusion was the reason to void but I'm in a league where unfair trades are also voided. I once got some guy I don't know to give me something awesome for me and everyone voided it. Along with collusion they don't want one team to have a big advantage. If later in year and trade makes both teams better they will void if 1st place gets better.
Ehh, depends on the deal...
I mean one thing you see a ton is the idiot in 11th place that has the RB everyone needs just deals it for 50 cents on the dollar because hes out of it, what does he care? Sick of people bothering him.
I actually don't mind leagues that just ban trades altogether. Unless you do FF with all reasonably smart people you just see some terrible panic trades at times.
And people think real GMs are bad!