2 players versus 2 players battle match command and conquer rivals

This has been suggested many many times already, even by me. I would love to see it, but I think it would be hard to implement, including all the new maps they would have to create.

I think I have a better and much simpler solution. Just let 4 people play on the maps we already have:

2 players per team, each team has their own base, so we have 2 in total, no need to even change the maps at all. Each player has his own tiberium income and can build his own units. Your units have faction specific colors (either red/blue for Nod/GDI), enemy units still have the opposite color (red if you are blue, blue if you are red), but allied units are green. Normal rules apply to the games, however, tiberium income is increased very slightly, but you can build only 1 harvester. If you need tech, there is an option to request/donate tiberium to your ally. The reduced harvester count is to reduce the amount of units of the field. To further reduce this, you can have 1 less unit on the field in total (In the normal game, if you have 4 units on the field the unit respawn timer is longer, and when you have 6 units on the field getting a seventh out it really hard. With this change you can have 5 units on the field before the timer is very long.).

This is how I would introduce the 4 player mode since you don't really have to change much for it to work.