Some things I'd like to see implemented or improved upon. My post is mostly for visibility.
Skill/weapon loadouts would be a great feature. Changing skills at the testing station boss door becomes a chore after a while.
Add a "shuffle" button for the landsraad missions to throw out the available three contracts for a different set. The more explorable areas and testing stations that get added, the more difficult it becomes to align the missions for efficiency.
Landsraad missions should be structured in a more dynamic or "sandbox" style. Why not both versions of recon run? Reverse version of smugglers run? Objectives should be tackled in any order. Why do we have to disassemble ground cars in a specific order in Blushing Cavern?
Add graded loot to the landsraad rewards. Also update the landsraad loot pool so the variety allows people to target farm specific items. Endgame players don't need to MK6 dew scythes every week. Also consider adding graded items to the DD lab rewards.
Add dueling or a proper arena with no durability loss on death. This is a gateway for a lot of people to get "into" PvP.
Skills and abilities need balancing. At the very least damage should scale with combat specialization level. Lots of skills go unused. Please promote build variety.
I don't want my post to feel like a complaint, but these are all existing systems that could use tuning that would greatly enhance the game without the need for new content.