Sky's pre and post-quali was crap imo. And i HATE that Skypad feature, so unnecessary, lots of style and very little substance in that. Ted and Martin are still completely brilliant though, the BBC has no answer for those guys.
I like the basic idea behind the Skypad feature, in that it's supposed to give a pretty in-depth analysis, but so far they haven't really done anything that could not be done with something far less flashy and silly. Also, it would be much better to replace Georgie Thompson with someone who has a better idea of what is going on. A Davidson/Chandhok partnership and some more technical information would probably go a long way towards improving it. I imagine that things will improve as time goes on, but let's see. I think I'd complain a lot more if I was paying for it...

The bread and butter sky coverage is nothing special in my opinion, I didn't think that Brundle and Croft worked that well together, Croft and Davidson are great fun to listen to in the commentary box. But when you add in the onboard shots, live timing and driver tracker, that makes things more interesting, but for those who are paying £30 per month to be able to watch live, it's a little on the steep if you are not at all interested in the other channels included with the HD package!
There are other features?
I think the Brundle/Croft partnership will improve. Things are always a bit rough the first few times (Brundle/Allen, Brundle/Legard, Brundle/Coulthard and Croft/Davidson all took a few races to get to the point where things flowed naturally), so I suppose we should wait and see.