This system is definitely more interesting, because the teams that qualify for the quarterfinals will be drawn again and thus, no one really knows which team they will face next. But ya,regarding Bayern Munich in this round of 16 I think it is clear, that Bayern Munich will probably easily win too. Because ya, considering the opponent to be faced in this round of 16 is Lazio and ya, at least Lazio in this season also does not really have good results in Serie A, Because Lazio very different from last season.
Anyway, Bayern Munich clearly has better quality than Lazio because ya, Bayern Munich is always in and plays in the Champion League every season. Therefore, Bayern Munich certainly has better quality and mentality than Lazio and thus, it might be easy for Bayern Munich to beat Lazio later.
I must say that the clubs from the Italian leagues have do well in the various Competitions I mean European Competitions this season that means that nobody should look down on em even if them opponents are stronger.
Bayern Munich anyways have bigger chances of winning the Champions League. We all know how they're preparing hard from the Bundesliga to Champions League.
Sarri and his side have dropped a good form this season, they are not the club to hold down Bayern Munich honestly.
So many clubs are preparing very well, this Champions League is hard to predict, I doubt Pep Guardiola can be able to repeat what they did last season. Winning the treble is something that happens once in a long time.