I think he was massively overshadowed by Ahsoka's awesomeness
She is just a higher power and a higher level of awesome. I love her. The fact that a character that only appeared for the first time in the animated show can be this popular is crazy enough, but the fact that she is this popular after starting out her character arc as a very whiny and bratty stereotypical teen (in space) is practically a miracle.
That Beskar spear is pretty f***ing cool. It paves the way for some interesting possibilities - e.g. if Mando comes across a Sith, or if he faces the dark saber, etc.
This show is f***ing awesome. And I probably appreciate it more now than I would have back in the day because we have seen how spectacularly wrong this franchise can go. I watched something on Youtube with Dave Filoni and George Lucas and it was mentioned that Lucas was behind the three-episode arc about banking regulations in "Clone Wars"
Can you imagine if he was actively involved in moving this forward? There would be no hope whatsoever.