So the one thing I've always thought this game could use would be a way to individualize characters. I mean sure we have mods, but they don't create a large enough difference to really give each players holo figures a different feel.
To that end I would like to see something along the lines of: Apprenticeships.
This would basically be a scenario where each character could sign up under a school or master to gain an/some abilities/stats in exchange for giving up something else.
For example: Apprentice under the CLS school and gain 20% retribution, but lose 20 speed.
Or: The resilient school: Each point of tenacity has double effect, but each point of defense is halved.
This could be represented simply by a badge on the character (maybe with mods).
This could be represented on ships as well: Farmboy Luke School: Increased accuracy on all attacks, yet take more damage
There could also be tiers of masters/schools, which you have to unlock through quests.
In short, I think this would bring the ability to put an individual flair on one's team, and also opens more room for theorycrafting as well as some potentially fun gameplay.