Haha don't burn your 430EX! As I said in the rest of my post, my choice was financial. If I bought a 430EX for $400 and sold it for 60% of what I paid for it, I still would have lost $160. My Yongnuo was $180 new, so I think we can consider it disposable...
The odd thing is that my inexpensive Yongnuo flash has all of those things on your list... obviously there's no guarantee it'll work on future bodies, but I doubt Canon would completely change their flash system to deliberately trip up 3rd party manufacturers. They'd have to release firmware upgrades for their entire back catalogue of digital camera bodies to support the new system too, which would be costly.
That is really odd. Thats it! I'm going to burn my 430EX!
Good luck with your yongnuo, health to use it mate. It's not like E-TTL-II rendered a lot of third party lenses dead or anything is it? Canon would change the firmware, or activate extra features in a heartbeat without a thought for yongnuo.
Good luck also if you ever come to sell your yongnuo too.
I've never used them, never will, and so cannot recommend them.