Comment 23 for bug 894943

I'd say refine it to this:

Diplomacy menu on skirmish screen (to facilitate the new alliance additions)

Radio buttons controlling:

Build off ally conyard (can be changed to base via string & ini editing)
Disable friendly fire (make allied units immune to each other's fire)
Share money between allies (like RA3, splits it to both player's stockpile)
Share power between allies (similar to money, power split between allies)
Share unique tech between allies
Share Stolen Tech benefits between allies (note 1)
Share Tesla & Prism power ups between allies
Share MCV with ally (note 2)

Maybe even sliders for percentages for power and money like this:

Money percentage kept: 0% |------------| 100%

Power percentage kept: 0% |------------| 100%

Note 1: By stolen tech, I mean the tech index, not the unit. So if an allied player spies on a soviet player's battle lab, their ally, whom is soviet, gets a Tesla Ivan (allied spying soviet), not a Tesla Commando (soviet spying soviet). Since the way the units are developed by the spy logic in theory is that the spy recovers tech information on that side that allows the player that spied to produce a unit that has hybrid tech of their side and the enemy side.

Note 2: Essentially speaking, this is like unholy alliance. If you're Allied and your ally is Soviet, then you get a Soviet MCV along with you're standard Allied MCV. This means the logic has to not give Allied allied with Allied players 2 of the same MCV.