All done with OTA units:

Noticed the protector can stockpile/build weapons as it is being built by by a con unit. Have not tried nukes or EMP trons yet though (it is late).

Also, hovers sometimes spin in circles after completing move orders.

Units can also fire within their footprints (an freak out when doing so). In some cases they also kill themselves with their own weapons as well (was able to do this with a sub).

Warrior can fire high trajectory also? Kinda funny watching these guys spray EMGs in the air

It seems that all units can in fact start to be used right when the nanolathing begin. It's good to be able to already enqueue orders for a not yet finished constructor, but's it's bad to start building nuke as soon as the first spark of nanospray is cast. Units in factory can't move, but they can be selected and I heard they can even fire.