Are Nameplates possible with the current API?

[joshmiller83]

It seems to me a a lot of other people that ESO without Nameplates is Dull and that the Guilds have no representation and/or reason to show off since no one know what guild you are from. This would be very useful for PvP and Trials/Arena/Dungeons.

Is it possible to make a Nameplate addon that would give Name, Guild Name, HP Bar and so on? All of the info is there and used by the Unit Frame addons and I have seen a Colored Reticle addon do this. Can it be done with Nameplates and give us a more active social / guild aspect?