Excellent idea, my friend.
Many times I have been frustrated in RTS games by having to load large numbers of units into transport vehicles. It would make the game much easier by simply clicking a button and all nearby transport units will come in to transport the selected units.
Good idea, and I hope Ensemble considers it.

"There is no heroism in battle; only people putting aside their fears to save the men next to them."
-Me
Storm the gates of Hell