That leads to the repugnant conclusion.

I am aware of this, and as my previous comment implies, I'm not convinced it's actually all that repugnant.

Also, the way you describe it, it would lead to wireheading everyone.

Possibly, yes. Presumably, if you don't value being wireheaded, you wouldn't like that (or more accurately, you would like that, but you wouldn't want that). But that just leads back to the question of what to value, which, as the article points out, is not at all straightforward to settle.