Ah, y'see I don't really like the double points thing. It's setting one race above the others and saying 'this one is special, and also makes the winners' when, as we saw this year, the Drivers' Championship was actually won several races before the final one. Can't remember when the Constructors' Championship was won, so can't work out whether double points would have affected it.
The BBC says that it would have changed 3 out of the last 20 World Championships...
Also not so keen on the minimum of 2 pit stops. Glad that's been rejected. A lot of the interesting tactics this year were tyre-related, and removing the option of trying for a one-stop gets rid of some of the potential for end-of-race drama.
I'm in favour of the cost cap (so long as it doesn't cause any compromises in safety, obviously!) - can't see any issues with that.
And not really that bothered on the numbers. The current numbering system didn't really mean anything as it wasn't fully based on how the drivers finished the previous year - if you'd done really well, but your teammate did crap, you'd both end up with numbers in the middle of the field. Plus they omit the number 13 which strikes me as a bit of a silly superstition. So yeah - let them have their own numbers. Like how Beckham was always number 7 - it totally makes sense for merchandising, and so I can see the thinking.
I'm wondering if they pick crazy numbers like 2010 (if, for example, Vettel wanted to pick the year he first won?)
Also, I'm not looking forward to the chassis changes, just on an aesthetical note... They need to find a way of making the cars aerodynamic and also keeping them looking good. (Stepped nose, I'm looking at you.)