An addon that let's you type in the name of a player / mob / anything targetable in a text field and makes it target that "name" first. Allows search by name in order, or just for the one name, or for multiple names in either order.
On top of that (or in conjunction with) an addon that will target based by class first. IE; target priests first, if none target druids, if none... etc.
Afaik, the 2nd part can be achieved with DIYCE, but I feel like an addon would be more user friendly for rom's community.
An addon that will say how many white strikes you are doing in a second. This may seem impractical for most classes, but for rogue/mage, it would allow you to see if using combo throw would be more efficient than just standing and white striking. After speed CD's are gone, the 4 throws done by combo throw in 1.5s may start being faster than the amount of white strikes that occur in that 1.5 seconds.
I'm particular. Sorry.
Also, I know that name addon can be solved with an intense macro, but it does NOT solve the problem with, if X name doesn't exist, target Y, if Y doesn't exist target Z............ etc etc