Anyone else find this little wild wastes feature, and can I still charge the Archimedes II if I overloaded the main-frame.

Haven't taken wild wasteland yet, but no, as far as I know the only way to charge your Archimedes II is to select it as the recipient of the power- selecting anything else, even selecting to "power full grid" doesn't power the weapon.

One thing I wondered was if you could go back and change who gets the power. I'll have to go try that.