>>21310
It's only 12~18 episodes, depending on where you dropped off, so I don't see why you wouldn't. S3 almost felt like it took place in a pseudo alternative setting. There was next to no recurring characters. Events of S1/2 were only alluded to. Plot and stakes, while superficially similar, were different in minutia. Still, what happened at the end of S2 was important and shapes the landscape going forth, so to speak, so you can't just skip it.
Last season wasn't as strong as S1, but not as weak and meandering as S2. Considering promotional images have all the major players showing up, and episode 1 ended with Ruuko showing up, I'm thinking this is the final ultimate season that wraps it up.