The Dark Masters were basically Piedmon featuring Puppetmon. The others got like 5 minutes of screentime.
Not true, there were several full episodes dedicated to the children entering the territory of the various Dark Masters and taking them out one by one. Piemon (that is one unintentionally hilarious name… I mean I know it's derived from "Pierrot", but... PIEMON. SERIOUSLY.) was pretty much just chilling on his throne at the top of Spiral Mountain through the majority of that final arc. He only actually fought the kids right at the start of the arc, and again at the end after the other three had been killed.
[qimg]http://dma.wtw-x.net/DMA/DigimonStands/Toei/Seppi/Zudomon.png[/qimg]
Zudomon was my favourite Digimon :) I mean…. HUGE FRIGGN HAMMER!
He's like a cross between a massive Ninja Turtle, Squirtle, and THOR.
You know, on that note, guess what his hammer is supposedly called? "Thor Hammer". Blitzmon in Frontier also had an attack literally named that. And another called "Mjölner Thunder". So yeah. Seems Bandai likes referencing Thor… Well, I guess there are a lot of Digimon based off various mythological figures.