Thomas Tuchel has only coached Bayern Munich this season, so if you want to see if can bring Bayern to play well, have to do it next season when they play in the Champions League.
For the Bundesliga they have played well and ended the season in 1st position having the same points as Dortmund in 2nd place.
Bayern Munich will also compete in the DFL Super Cup final against Leipzig, I'm sure Thomas Tuchel with Bayern will be able to win the cup.
for me it's not too bad Tuchel even though he only trained Bayern Munich last season even though he failed in the champions league but at least he was able to dominate in the bundesliga and there is a little confidence in the following season maybe Tuchel will be more enthusiastic about bringing Bayern Munich to be able to get the best position in the champions league at least until final round.
Actually, in this case talking about domination doesn't exist for them this season, especially when Tuchel was there because seeing from the few matches that were carried out I don't feel that it's something to be proud of for Tuchel even though they managed to bring back a trophy but of course we have to be aware that it was the result of Dortmund's oversight in their last game.
But indeed in this case there is of course a good hope this season for Tuchel. He can now reorganize Bayern's players as he pleases with conditions of improvement, of course, and of course this can be a good capital so that there is hope for a better next season at least in terms of domination, there is a lot for Bayern.