Well I was thinking after reading Ringworld and Ringworld engineers and neutron Star Niven's known space is better known to me than traveller. I could play a puppeteer pretty well but really don't have a clue with the K'kree and will only try to make an attempt at a Hiver.
Mandarin Dude,
Well, from a behavior standpoint, a Hiver is a Puppeteer. And don't even get me started about the Kzin and Aslan. The development of each over the last 40 years has obviously effected the other.
So thinking of what it would take to bring known space to traveller.
You'd have to seriously fiddle with jump drive, Known Space's hyperspace drive is very different. It would be doable, but you'd be throwing out fuel requirements, speed, ranges, and other basic stuff. Working in your favor is the fact that all hyperdrives operate at the same speeds while "jump" endurance is based on your power plant and life support needs alone. Niven has people spending years in hyperspace.
So, you'd have a power plant aboard running both your maneuvering systems and your hyperdrive. His reactionless thrusters are the standard
CT m-drives and
MT's thruster plates. His fusion drives can be put together using
HGone,
TNE's HEPlaR, or either version of
FF&S.
There's a hyperspace radio too, so you've FTL comms that don't rely on ships.
The Quantum II drive would just be a faster version of the original hyper drive.
I like some of the worlds in it like a venus like planet with a large plateau that is the only place habitable.
Little or no fiddling here.
LBB:3 easily covers nearly all of Niven's odd worlds,
CT's Victoria is a riff on Known Space's Plateau for example, and
LBB:6 Scouts added atmosphere codes that described worlds like Jinx.
General products hulls are to big a handwave to me though.
Oddly enough, GP hulls could be the "reason" behind
LBB:2's hull table! Rather than have the half dozen(?) shapes and size Niven suggests, you could have more variety.
Looking it another way, you could designate a handful of hulls from the table as GP hulls and say the rest are versions made by someone other than the Puppeteers. Niven does imply there are other hulls out there. The "true" GP hulls would have some sort of fantastic damage resistance, which is perfect up to a point, and the others would be treated normally.
IIRC in one or more
Ringworld novels the GP survives insane amounts of damage while all the equipment extending beyond the hull is completely lost. In a short story,
Borderland of Sol(?), the heroes arrive in an armed GP hull disguised as a more prosaic, non-GP hulled, liner.
Good luck and let us know how things turn out!
Regards,
Bill