I have need and idea and absolutely no codding experience. So, here we go.
In many raids/pvp as a leader you have to show where some players to move, how to prevent something and so on and so on.
What addon I would love to have and till now I haven't seen single one ingame, I hope someone can make something like that.
It shall be binded on hotkey and open over whole screen as a blank screen, promoted ppl in raid with mouse click will be able to drag/draw lines like in Windows pain, no more features, just plain lines and explain tactics to ppl. It only must have that ability to share info with other raid members (everyone must have one installed) so when they open screen they see what raid leader paints...
Just imagine it like a board that NBA coaches using drawing tables during timeouts.
It's going to make all raid encounters much easier to explain to ppl. What do you think?