I currently play 8 prog teams in the live side and 8 prog on the sim side. Let me tell you live is superior and the sim is way more work. I have had success with both, and lot's of failure as well. Sparky Sims can f*** up your pitching staff. That is what is nice about live. Way more control.
I am not leaving any leagues because of the impending shut down of live. I just hope they fix it.
My 2 live leagues that I commish will not play a regular sim season. I have seen enough to know the difference.
If that ends them so be it.

Let's just hope the new guys are not blowing smoke and really intend to fix this