if you could have one super power

[heX]

Originally Posted by Stormy

I'm not 15 anymore...

don't remind me

Originally Posted by Stormy

But what if it wasn't consuming people's superpowers, but instead their qualities/skills/knowledge?

Well, that's not what his power is.

Originally Posted by Stormy

And the idea behind Sylar, IIRC, was that he was modeled as a cannibal/zombie who ate people's brains in order to steal their powers.

It doesn't matter what he was molded after he still doesn't eat people. I'm not sure where you read he ate brains or if that was ever what they were going for but he hasn't and doesn't eat brains nor does he steal people's qualities/skills/knowledge. Nothing about Sylar fits your description so that plus the fact no one else would have a power should be enough to answer "what is there to prevent someone from requesting Sylar's powers, which would ultimately allow one to have every possible power?" move on before you turn into a pumpkin nooberella.