2 Finals has to be the worst surely? Maybe it's just me!! I'm not a fan
It's an option though. One thing I will say, when it was run in touring car, I don't think it was great. It's not "easy" to say who actually won the meeting. It may seem obvious, but i seem to remember it not working out quite like that.
I'm firmly in the 3 leg A finals camp

(if it isn't obvious!). Yes it's elitist, yes it's not fair on everyone over the amount of track time everyone gets, but I think it makes making an A final that little bit more special. That's what I used to think before I'd made A's, something to aim at. Nationals have been that way since I first did them (a long long time ago!).
Shame I can't be there to vote, i'm not in the country that weekend!