Comment 1 for bug 896242

This can already sorta be done. Although the factory would be limited to only 2 purchases via 2 SW paradrop attached to war factory"due to limit of 2 sw's per building", with each SW costing money, and they would be limited to 1 purchase at a time. Also multiple SW's could be purchased at same time due to it being an SW, although recharge times could offset this.

But what you want is different from this, but I thought I'd mention it. I think your idea is neat, but not very important for ares right now as other bugs on tracker should be addressed with higher priority.