In a perfect world stomps, soccer kicks, knees to the head on the ground and elbows would all be allowed in the same organization.
With that said, the abuse most of the pride guys took definitely showed as they got older. They seemed to age quicker. I also like watching guys fight as often as possible and with those rules I see more guys being medically suspended for much longer.
I do wish that knees to the head on the ground were allowed though. The current rules still continue to favor wrestlers far too much. If you can effectively sprawl when a guy tries to take you down, you should be able to punish him for that. Instead, he can just keep his hands on the ground and you are still pretty limited with what you can do against him.
It would make side control for wrestlers more deadly though as well. Instead of hammer fists they could start blasting away with some knees from there.
The 10 minute first round is also a great idea. Bjj guys are at such a disadvantage with the 5 minute round. Most won't even try to pull guard anymore because say you pull guard with 2 minutes left in the round, that doesn't give you enough time to work against a wrestler or striker that knows enough bjj to survive for a little bit. Give that same bjj guy 7 or 8 minutes from that position though and it significantly increases their odds.
All things considered though, the sport is awesome. These are just some minor changes I'd like to see. Others may disagree and that's fine.