I was thinking about artificial gravity. Certainly most of the sci-fi of IP is dependant on gravity manipulation (SLIPP-drives are artificial wormholes, fusion-power is ignited by gravity-generators) - so for consistency's sake, artificial-gravity really does need to exist.
So the plan is to leave artificial-gravity as a semi-luxury item. The rationalization being that while the technology is certainly available, the equipment needed to install small gravity-generators every 2 meters of ship-floorspace would be a big expense, and one that 'true spacers' would shun. Not to mention the extra weight and power-requirements. This also picks-up on the rule-of-cool. Freefall fighting would be kinda awesome, as would character aspects that liked/disliked normal gravity. Characters would still encounter gravity regularly - on planets, 'fancy' places, and anywhere that newbies would frequent. At the same time, if any GM wants their universe to have artificial grav commonplace, there's not much suspension of disbelief needed.
As a bonus, with the rationale built this way, it's easy to bend the rules just a bit for the inevitable film-option-deal - most scenes could happen in regular gravity, allowing easier filming. We can add drama to a few sequences by putting them in zero-g. E.g. the power goes out and the team must rely on their freefall combat training to fight-off the pirate boarding party!
I think it's good to plan ahead.
