I think this new format will allow us to enjoy the Champions League match schedule a little longer because until now we have not entered the round of 16 and are still waiting for 2 more matches and are still following the play-off round to see who qualifies and this match break is also quite long even though it is already mid-season, this season's competition in the UCL does look very tight even Real Madrid and Man City are in a less safe position and if they face each other in the play-off round later I think we will not see one of them in the round of 16.
I can't fully evaluate the new format of the Champions League yet, but my first impression is that I don't really like how everything is going. It's unusual to see one leader in the table, while before we had many groups and each had its own leader, this is what created the impression that many leaders of their countries were playing in this tournament, but now everything has been compressed into one table and this is losing its scale for the Champions League, that's my opinion for now.
I am pretty sure that we are going to end up seeing this new thing becoming much better. Bunch of big teams leading their own groups were boring, I love this new system a lot more. The fact that we are seeing City, Madrid, PSG, all doing terrible right now is the reason why I love it so much, because back in the day, even if they had a few bad games, they would win the rest and do fine, but here they are not doing that great and that's something awesome to see.
There is a change, there is a difference, there is something that isn't as easy as the last time for them and that's what matters to me. As long as the situation is this clear, I am quite happy about it and I will not be caring about what's going to happen, it's just not that important for me.