Or just not have fullshare...
edit to actually be constructive and provide argument
IMO having fullshare promotes more turtle/eco style gameplay. You can eco harder and if you lose your ACU, your partner still inherits all your eco. Most of the time your deathnuke kills the enemy army, your team comes out ahead. Granted, then 1 person has to do twice the work, but having 2x eco does have tremendous advantages.
No fullshare doesn't always mean a death sentence, as reclaiming and rebuilding teammates base is still strong. And to those who say "but you are at a huge disadvantage, and its harder to win", well, your teammate just got killed. That's kind of the point of the game, not to lose ACU. There should be consequences.
That, and always having an opportunity to mount a comeback via a desperate ACU snipe is one of the best parts of this game. Its practically non-existent if sniping ACU just means their teammate auto-inherits wealth.