Oh, so many things. But for now, ship statting.

GURPS stats for the Douglas-McCall Jackrabbit

and the Gravin Starfaring Mule

Adding the Douglas-McCall Foxbat,

Gravin Starfaring Pathfinder Plus,

the Canterville Sonora,

and plenty of others.

Still need to decide which version of the GURPS shipbuilding rules I'm going to use - the ones in GURPS Spaceships, in the GURPS Vehicle Design System, or in GURPS Traveller: Intestellar Wars.

The Spaceships ruleset is simpler overall. The Traveller rules are setting-specific, so they might have to be tinkered with, and the Vehicle Design System is for 3rd Edition, meaning that there's probably some converting to be done.

All three have their merits, and I generally default for the more granular options, but I'm not proficient enough with GURPS to easily weigh the options.