Yeah, I watch f1 fairly regularly. Almost got to Silverstone for P3 and quali this year, but the trip got cancelled because my friend's mum was sick (in fairness, he had offered me the ticket for free in the first place).
Not sure what I think of the changes yet. The only ones I've really heard of were moving to more digital broadcasting and promotion, having more US-based races and turning each race into a week-long series of promotional events. The first idea seems sensible, the second I can understand although as a traditionalist I think that ideally there should only be one per country, and the third again seems sensible from a marketing perspective but could be draining to the teams and could enforce them having to move to the rumoured system of having two sets of raceday crew (and let's not forget, each team has about 60-70 of them...) who alternate races, else they'll never get to spend any time back at base.
In general I'm optimistic about liberty over Bernie "screw the rest of the sport, so long as I'm making money off dodgy transactions" Ecclestone. If they focus mainly on adjusting the rules to make it more competitive, faster and - dare I say it - a bit more dangerous then I'm in board as the current format is essentially neutered right now. However, they need to do this carefully as the obvious solutions (customer cars, standardising features, restricting development) aren't necessarily the right ones.
Heck, I think I'd probably find f1 most interesting right now if the teams had to go back to only having half a dozen staff total and bringing the cars to races on the back of a Land Rover trailer, like the good old days of the 60s and 70s.
The other thing is that, rather like football, f1 has competing codes in the US which it doesn't really have to compete with, so it'll be interesting to see what aspects of indy and nascar they copy and which they distance themselves from.