(1) Floyn Fix - but even better:
(2) Local team color settings: Option to set your own custom colors for other teams (up to 16 teams) so you can always see the enemy the same way and there are no advantages for dark green, black, etc. There would also NEVER be any floyning because you would be picking the other players colors the way
you want to see them!
(I just thought of this the other night!)
(3) Multi-select active plugins on either side with "move all" left/right buttons.
(4) PLUS, a pulldown list in "plugins..." for custom active plugin combination presets (e.g. WWII units + Map XYZ as a preset you could select with pulldown). As many pulldown items as you want each containing up to eight plugins (we've used 6 before). This would probably save OoH hosts 22 minutes and 97 mouse clicks every night.
(5) Only game-play related one I can think of off-hand: shift-clicking a unit's path can pick up an object during the trip if the shift-click is on an object. In other words, you could have a heron pick up a root en route (cough) to an ultimate destination without having to move him again after he picks up the root.
(6) Doing shift-F7 to keep up player stats is semi-transparent.
(7) Semi-transparent graphic of inventory/items unit is carrying right over the unit's head (stacking upwards) - can be universally toggled on/off.