Feffoids existed with Biffoids.
Ow OK, didn't know that. I stand corrected!
According to one old quote from Kim there was plans to bring biffoids back at some point. He's remark was rather uncertain: "and
maybe bring biffoids back"... which apparently was dropped later.
All that confirms your point, we can't say feffs or even maffs are some kind of successors for biffoids.
Umbra are not Mulmun.. Umbra use tools
Right, Umbra weren't just another mob they were special. First, they used whips. They were formidable for a noob like me, I remember fighting for my life and dying often... The extreme challenge only made them more interesting!
Second, they looted UL whips, the same whips they were using against you. It was rare loot but it happened, many ppl got those whips from them.
Last but not least, their whole environment was very special, all those signs for
"STOOPID UMANS!"... their camps, altars... those great Black Orbs that sucked in all light in the whole area around them... It all created an aura of alien mystery and danger. Everything about umbras was different.
Now we got Mulmuns. Just another mob, you can put it on some snowy LA, you can drop it in desert... there's no difference it's all the same. What mystery? What environment? We'll slap a mission on them for u, go kill em by tens of thousands that's your story.
And then ppl ask what exactly was lost when PE became EU...
Well, to be fair there was a good effort to create unique environment for maffoids - the
Maffoid Camp near Cape Corinth (Dustkeep Valley). The village looks cool, the skeletons, the whirlwinds of sand, the huts and cages, the butterflies and there's this Warchief's wave arena on the hilltop. If they would keep that direction and go further. Special loot, more unique landmarks, integrate the mobs with their surroundings, make it a story, an adventure.
That Cape Corinth area was Kim's idea I think? So give us back Kim and let him work!