I think they did well lately but it's too soon to determine whether or not they will be a great thing again referring to Germany. They certainly don't like the talents but talent isn't enough to make a great team alone.
Never underestimate Germany. Except 2018 (The World Champions curse to get out at group stage. Happened also to France 2002,Italy 2010 and Spain 2014) they always do great at the World Cup,its in their DNA! So i think Germany will do a great World Cup.
I think they're taking a slow approach when it comes to transfers. They made sensible transfers in the window though like Botman. I think they'll play well enough to possibly challenge for a European spot.