This is a good idea, I've been supplementing my inactive full size shipyards with 1000 ton designs of all types. They've been on add slipway (50%) for years because of resource shortage, in the meantime it's so cheap to retool my 3 slip FAC yard so it's been used to pop out magazine ships, tankers, light carriers (basically fuel efficient fighter delivery ships), scouts, rescue ships, and then back to AMM spam death swarm. However some drop module craft would be handy too.
Btw, how long can you keep your soldiers canned up in drop pods for?
I'm also wondering how viable 1000 ton capture craft would be at my tech level....
EDIT: I forgot about researching Marine companies, prohibitively expensive at the moment, especially considering the prequisite of first needing to research ssault battalion, then marine battalion, then finally marine company, and as far as I can see theres no other company sized ground units.