I noticed 2 kind of minor issues that could possibly be resolved. This is just a suggestion, of course and I am not claiming I am offering the best solution for them, improvements are of course welcome.
1. Build ammo for PS / TS
I think most of us will agree that getting PM ammo can be a pain at times if you don't have a main for crafting them for your alt (or nice guildies). I even met some people who didn't bother with pm ammo and were using storebough. I was thinking of adding a new skill that would allow those 2 classes to build up to 4 ammo kinds (considering they get 4 gun slots and might want to use a different gun in each slot). The skill upgrade requirements could somewhat depend on the hull upgrades. The player would be able to analyse and build up to 4 different ammo, and would have the option to delete the known ammo list for learning a new set.
2. Making the Solar sail engine a quest reward
A moderately long / hard quest, primarily aimed for progen who often have a hard time lowering their signature. Either a quest chain rewarding the player with a 200% lv 2 / 3 / 4 Solar Sail. Most of us know that the control bar can be hard to get (the lv1 debris are not that much of an issue in my opinion). I was thinking of asking the progen players to explore the new progen trade routes and eventually reward them with a SS engine after 1/2 runs. I don't know what they are and wether it would be possible, tough. The point would be to mix exploration of some kind with getting a nice useful reward.