If you are happy with the 7D then that is good
I will stick to my series 1
the AF locks on SOOO much faster.
Irrelevant if the 7D is as fast as you need it to be
When I argued from this point for the 5D2 there was a flurry of activity from the 7D fans who criticised the AF on the 5D2 labelling it disatrous - and I got 30 smites in response.
For BIF/sports etc the AF needs to lock as quick as possible - even my old 1Ds3 out performs the 7D from this point of view. I had 2 7Ds which I used alongside the 1D4 and I wouldn't go back to the simplified AF system on the 7D.
I am hoping that the next 5D has a better AF than the 7D and hopefully as good or better than the 1Ds3. With the series 1 style AF cross-type focusing on all 39 AF points works with the 17-40 and 24-105 which is excellent news considering he popularity of those lens. For studio work the 7D style spot AF might be useful if it could be selected seperately from a normal AF point without changing a Custom function
Other things I would like from the series 1:
- Spot metering linked to the AF points. With 39 AF points it is easier to compose with the AF point where you need it - and get the metering correct at that point
- multispot metering - means tricky objects such as a wedding dress can be exposed correctly
- up to 7 shot bracketing for those difficult light shots/hdr with +-3 stop with variable AEB amount. Sequence to be done through holding down the shutter whilst in continuous drive mode