I dont play air but I feel for them not able to reclaim metal fields. I know this was talked some time ago.
There could be "transporter" with no attack ability which could take metal wrecks and bring them back to safety so air player can reclaim them.
Or even better just give current transporters ability to pick metal wrecks as well as units? Just give 1 tranporter to planes?
Currently if you lucky with com you can kick wreck a bit.
From balance point tranporters carying metal wrecks can move slower?