You missed my point here.
I am not saying if we get City or not. It's just a placeholder for a top team that we can meet in the R16. Pool, City, Arsenal, Real, ATM or another.
It's also very likely to get a top team in the R16, as it will be one of the 8 best performing teams you'd have to play against, if you don't finish top 8 yourself (then get through the prelim knockout round).
It seems more likely that in a league phase the top 8 will be 8 elite teams - whereas when it was groups, you could always get a weak group winner due to a weak group overall or a shock, etc.
To offset this, the fact everyone has a unique schedule could result in some unlikely teams being top 8 due to some teams having easier 8 games than others. We won't know yet as it's the inaugural season (though Football Manager has tested it).
Also, the fact that the last two games are in January and there's so little time between them and the round of 16 (as compared to previous years when group phase ended pre Xmas) means there's less likelihood of teams falling out of form before R16, as there's not a two month break. The teams who finish top 8 will likely win or get four points out of their late January games, highlighting they'd still be in form.
Lots of quirks here.