Cast Bars Showing on More than Two Enemy Nameplates?

[ProteinOrcWarrior]

As a protection warrior it would be nice to be able to see casts other than my current target and focus target.

Is there any addon that will show cast bars on ALL nameplates, even those which are not targeted/focused?

I have gladius for PVP, I need something for PVE.

[Chozobo]

Impossible.

[ProteinOrcWarrior]

Impossible.

Could you at least explain why?

[MushroomBomb]

Could you at least explain why?

It's just not supported by Blizzard. AddOn authors can do amazing things, but only as long as it's possible within the rules that are set in the game. This is just one of the cases where it isn't.

[Deleted]

Wrong, the addon Overhead does this.

[Taryble]

However, Overhead only works in Arena PvP. In a PvE, BG, or World PvP situation, what you're asking is not possible.

Cast information is only given for certain universal objects. Here's a list of them.
Player
Target
Target's Target
Focus
FocusTarget
Pet
Party Member
Party Pet
Raid Member
Raid Pet
Arena Member
Arena Pet
Arena Opponent
Arena Opponent Pet

What this means is that if you're in a situation where one of those definitions doesn't fit, then no castbar can be displayed at all, on the nameplate or otherwise. Yes, that's an awfully large number of casts that can be seen. However, most of them are party members or raid members - or pets of same. The only enemies you can see are your target and your focus, except in Arenas.