Been trying to scourge the Search, but I guess it's way too broad, or just not working.
But I'd totally like to see Strikecraft put in. single/two man fighters that are only a few tons with specialized components. They'd only have a few hours worth of fuel, extremely low caliber weapons (1-5 cm gauss cannons, .1-.8 size missiles), but able to deploy a flight of them for operations.
since there would only be one to three 'crew', officers would be discouraged from flying them, but able to should the player choose. The idea behind is that fleet carriers can carry the 500 ton 'fighters' which are fine and dandy, but they can usually only mount one laser weapon, or box launchers (in my experience with 'em at least). So I don't find them nearly as useful as just having a full-on warship with greater range and firepower do the job. But I would love to have strike craft that could launch and be able to evade/shoot down missiles, or have very very long raids.
Not to mention the RP perks of being able to have a strike craft squadron rip apart hostile alien ships while keeping the fleet safe.
Also, I support the colony tree of per sector, per system, per planet. And auto-assignments of civilian administrators.
Aaaand Also, mobile repair docks are already in. Just tack on a huge amount of Mantinence Moduals along with a lot of Damage Control stations, the 'mother ship' will take over from there.