Yes even I dare say that they will come back out as champions. Indeed I have not seen what their gameplay is like for next season, but I'm sure they will do more or less the same as the previous season. If you look at the team squad, Bayern Munich is quite promising with the arrival of their new player. On the other hand, Borussia Dortmund, which is expected to be their competitor next season, has lost their good striker.
In the Bundesliga, it's clear that next season Bayern Munich will still be champions because considering, as you said, the current Bayern Munich squad is very complete and it definitely gives Bayern Munich more power next season so that Bayern Munich's chances of winning are again in the Bundesliga is still bigger.
Before the start of the new season, it was already known who would win the Bundesliga, so far no other club has been able to break Bayern Munich dominance in the Bundesliga. Bayern Munich is listed as the club with the most Bundesliga trophies with a collection of 32 trophies, (Nurnberg) with a collection of 9 trophies is in second place and followed by (Borussia Dortmund) with 8 trophies.
These statistics show that there is inequality in the Bundesliga competition. The dominance of Bayern Munich that occurs continuously because rival clubs are not able to provide a fiercer resistance to Bayern Munich in every season, this is what makes the Bundesliga look boring.