Special Visors (Examples from Metroid)

It could be nice to have them, but they really should be limited in usefulness, for example, the heat visor would only show the general direction (a large blob?) where there is heat instead of like it is in e.g alien versus predator, where the heat signature disappears cleanly, showing the target perfectly fine.

As a fun fact: the dark visor you speak of, in MP2 multiplayer, it shows other players through walls

 

I'm pretty sure I've commented on another thread about pretty much the same thing, but this is the one I bumped into while browsing the brand new suggestions feature on the site, so I'm bumping and up-voting it. Sorry guys~