I like this idea. I've a few special snowflake papercuts of my own that I haven't seen anywhere.
Holstering your weapon
I love my trooper, I love the feel, I love the mechanics. I sometimes wish I could take cover too, but that never bothered me.
What bothered me instead was my trooper constantly putting his blaster rifle/assault cannon away for a second until a new combat situation broke out. Then I'd casually walk into a dialogue with my target, a nekghoul, and his human bro.
Long story, short question: Could we have an option to toggle auto-holstering on/off just for the fluff of it? Since holstering appears to be an automatically triggered method after combat and while standing still, I wager you could add an optional switch that would prevent the holstering from occuring automatically.
Secondary but not important thought... option to walk into a dialogue with weapons drawn or holstered? There've been combat-to-dialogue transitions that felt out-of-tune, for me, personally. I don't think a pre-cutscene selection box or dialogue-like selection mid-cutscene would help. Perhaps it could rather trigger based on whether your weapon is drawn or not.
Which brings me to Tactics-emotes!
This is an idea I've had since the closed beta but never voiced. 6 out of 10 Tactics emotes have animations tagged to them. Very good, probably underused, animations. Why not tie weapons into these animations? Sadly, I'm no expert, so I wouldn't know whether you'd have to redo whole animations from scratch or just part of them. If the second, I could see it easily done with lightsabers and pistols involved, but likely a bit trickier with sniper/blaster rifles and assault cannons (I imagine /giveup with an assault cannon one would be a nightmare to design). But let me tell you something: in KOTOR, I as-good-as spammed the 'flourish weapon' key And I probably wasn't the only one out there.
Visual stuff, really.