The "Skill Remover" could also double as Zombifier or Neutralizer turning a lemming into a Zombie or Neutral
And the "Skill Converter" Could revive zombies into normal lemmings or athletes or turn neutrals into normal lemmings or athletes
I'm not sure that the Skill Remover should make the lemmings zombies or neutrals - it just becomes another trap to be avoided then, rather than having a potentially positive benefit for levels where you might
want the permanent skill to be removed.
I do like the idea of an object that applies skills to any lemming that passes through, though - maybe this could be a separate idea altogether.
I take it the "skill converter" gives any lemming that passes through a specified permanent skill... If you want to force the player to send lemmings to point X to receive a useful permanent skill, you can put a pick-up skill there.
You could, but an object that applied skills to any lemmings passing through would, in effect, be like a second exit that all lemmings must pass through first. It's more difficult to get a whole crowd somewhere than one pioneer lem, so I can see it being a fairly good standalone object.
Also, there's potential for it to apply a number of skills, not just one. And - it automatically applies the skills to all the lems, reducing the need to clickety click on all those that need said skills.
I can see potential for this idea, definitely.
As for the Remover/Re-setter: I do think this should be to remove permanent skills, and cancel zombies/neutrals so they become normal again. I agree with Proxima that an object that makes regulars
become zombies/neutrals would, effectively, just be another trap to be avoided and thus wouldn't have much use.