Of course the cynical thing would be for Germany to get the pipeline flow restored by giving up on the Ukraine boycott and mollifying Russia. THEN, build like they did in 1930's at a madcap pace militarily, so they can impose sanctions from a stronger position whenever Putin goes after his next country.
This is different from appeasement because it would be part of a planned ramp up for fighting. Buying time when you know that is all you are doing is not appeasement but strategy.
Appeasement means you "give them what they want" and YOU continue as before. It is not if you are using the time for full militarization. Appeasement should not be confused with a deliberate delaying tactic.