An interesting read, the interview, without him ever saying anything concrete.
A week long extravaganza is nice but most folk are only going to be there for the race or the weekend at best, maybe Friday as well. I think many folk would be happy to see the efforts focused there and preferably with circuits not having to pay eye-watering fees for the race and therefore having to gouge the fans at every single opportunity. To be fair, it does sound like there's some talk of actually making this happen.
Getting back to circuits where the fans turn out regardless of weather and session is also a must. OK, it's just practice, but the difference between a, say, Silverstone practice session and some of the newer venues is just staggering. If they are going to push this "we're the biggest global annual series" aspect then practice sessions in front of a handful of folk...not so good even if race day is a reasonable crowd.
Also, if they've any sense, they'll look at the circuit tender/design process. Yes, it's difficult with FIA safety rules etc. But they need to find a way to make any new venues genuinely impressive racetracks, as opposed to genuinely impressive facilities. The hit-rate of new tracks since Malaysia and the start of Tilke's "reign" is woefully crap and, doubly bad, for every Sochi or Baku there's a classic racetrack being displaced off the calendar.