I haven't purchased 24 yet and was considering a pass this year. However, I took a glance and these immediately popped out at me...
* Will not see other GM feedback until you submit an offer
* Will not be able to tinker endlessly on trades, as you will need to submit to see feedback from the opposing team
* Make this work now button disabled when trading hard mode is enabled
I ranted quite extensively about these very issues and I am extremely pleased at these changes. I always have faith in OOTPD.