Its Bands you'd like to see reunite. You named one band that doesn't exist today in some form or another. Thats not really saying much if those are the bands you'd like to see reunite, when you can still today see Metallica with all but one of the members from the era you like.
This whole thing comes off as "Bands I'd like to see go back to playing music like they used to"
I mean I'll give you Guns N Roses too, but really, listing Metallica as a band you'd like to see reunite is just strange.
Anyways, on the topic of bands I''d like to see reunite...The Refused and The Replacements.
On the topic of bands who's original lineups I'd like to see return, The Misfits with Danzig.