I really hope rhinos aren't removed. They might be un-realistic but they're alot of fun to waste some time in. At the very least I hope there's a cheat to spawn one.
Glad to see gangs are returning, I hope to see some new ones though. Maybe MS-13 or something....
I didn't care much for rampages or unique jumps, so i won't be too disapointed if they're taken out.