I found this thread interesting, but couldn't think of anything to say in reply. But I felt bad that no one had replied, so here you go.
I'm up and down on the Mole Man. He has huge potential but has seldom realized it. It hasn't helped that he quickly competed with other "underworld" villains. He'll always be memorable as being the FF's first foe.
Was there some sort of "Underworld Wars" story in a series of 90's annuals? They should make Moley the main guy down there to give him more cred. Moloids have evolved too. They were smart in Hickman's run and in Inhumans there was a huge on on steroids that was fighting for sport.