Maybe write something up and send it off to Freelance Traveller?
Ha. If I spent that much time on it and came up w something good enough to share w others, I'd more likely get my artistic son to do some interior illos, maybe hire someone for cover art, make a nice quality PDF and put it up on Drive Thru.
What are you thinking of as far as M-drives for your setting?
I spent a LOT of time back in the early months of this year reading up on different realistic reaction drives as in THS and Terradyne, refreshing my limited understanding of orbital mechanics and what to do when the timing isn't right for a Hohmann orbit, or when you are in a hurry and have spare delta-V to go faster, and finally decided it was just more trouble than I wanted to deal with for a game.
Those realistic drives were used historically IMTU, but once they got some research stations going out where solar gravity is miniscule, they discovered the handwavium principle that would lead to something that works kinda like stutterwarp - at least the parts of stutterwarp that I like, leaving off the parts I don't like. None of that quantum tunneling that makes combat so weird, just an inertialess drive that somehow grabs onto the fabric of space and pulls. For a given ratio of drive to ship mass, it gives a certain velocity (not acceleration). Starts from zip, stops on a dime. Due to the mystical way it works, it also adjusts movement vectors to match the largest local gravity well, so we don't need extra reaction drives to go into orbit, only tiny puffers for fine maneuvering such as docking. Decreased efficiency under gravitic influence greater than .1G, so most need shuttle or something for interface to planet surfaces. Frontier transports are sometimes streamlined and carry reaction drives for landing and taking off, but most ships are strictly spacecraft and never touch down.
Later developments in this handwavium drive enable it to transit to FTL once it reaches a minimum level of gravitic influence (like stutterwarp) but instead of all of the complications of the stutterwarp gravitic charge killing everyone on board, this drive just stops working until the charge can be discharged. If someone wants to build a ship w multiple drives to bridge larger gaps between stars, they can do that - but the drive systems are very expensive, so that is not standard at all.
Another development (inspired by discussion here, but I don't recall who suggested it) is that someone discovers how to make handwavium drives with some cheaper more plentiful element than tantalum, but these are only good as M-drives, cannot speed up to FTL. Makes system ships available at lesser cost than starships.
Conveniently, all of the primary specs for these drives are the same as for stutterwarp, so I can use all of the standard 2300AD ship designs.
(And yes, I do hope to come up with a cooler name for it than handwavium, that's just a placeholder. I don't want to call it stutterwarp, as that would confuse people already familiar w 2300AD.)