Meh, in reality, last years rules, Merc 18+ poles, who cares which one of them get it.
This year there will definitely be more randomness. We had a LOT of team qualifying and team finishes last year, as in Merc 1-2, Ferrari 3-4, williams 5-6, and the championship points ended up the same. This will lead to less predictable qualifying.
I can see both packed grids and blocked laps cause more upsets in Q1 than we got last year by a long shot and if Manor/Haas are actually semi competitive it means the 5 that go out will be extremely random this year as opposed to almost always 4 slots taken by the same two teams every single race with one wild card which 95% of the time is between the same 2-3 drivers.
Q3 could get interesting, say Ham/Ros expect to be the final two, they want to save tires for the fastest possible final lap with the least fuel but a couple of other guys went balls out not caring about pole and both of them go faster. There is less chance of blocking and bad timing in Q3 but still room for more tactical mistakes.
Will it be brilliant, I don't know, should there be an exception at Monaco, definitely... that track is a joke and 22 cars in Q3 will be stupid, probably first or last car out wins, everyone else has no chance.
I'm not exactly pro the format, but not against it either.
When watching on tv the existing format isn't bad, but honestly if I'm travelling a long distance and paying hundreds of quid mostly to watch a few specific sessions it's not exactly bad for on track spectators to see more action while qualifying is on.