I agree with you 99% of the time, but I have to respectfully disagree with you regarding the dynasty trade example I gave. Nothing more to say I guess.
Do you veto a lot of trades in dynasty?
I can't remember the last time I brought one up for veto. Probably only once in one league out of 3 in about 17 years. What about you?
I have never vetoed a trade in any of the 4 leagues where I am a commissioner and I've seen many I personally thought were horrible. I don't believe it's my place to do so unless there's something "fishy" going on. Like pornography, you'll know it when you see it.
I go back to my fantasy baseball league days (a long time ago) where I needed a closer badly. At the time I had some previously light hitting SS that had 18 HRs before the All-Star break and offered him to another team for a mediocre closer because I needed saves, and it was accepted. The commissioner vetoed it because he thought he knew more than everyone else. In his opinion, I was the one getting ripped off so he had to over-turn the trade to "protect league integrity". I was furious and told him I knew what I was doing and was happy with the deal. I even said something like "I bet [the SS] would have less than 5 HRs in the second half of the season and I'd be happy with as many saves as I got from the Closer" - and it turned out that SS hit 3 more HRs the rest of the way. I quit that league of course.
Commissioners should know their role and let owners think for themselves - anything else is the real danger to "league integrity".