For QOL:
Redeem Cantina Token - Randomize in some of the Newer character shards into the options available. As it stands for most people the standard character options has been done and so is just shard shop food.
Replace Random Character/Ship shard drops back to energy spent to 1 perma drop. This will still remain slow but plannable and focused for players.
MOD Management - Honestly it just needs to be better. Mods is the key way for players to mix up the stats and make things interesting in GAC. So the ability to swop mods around with a credit drain would be better.
MOD components - would be nice to have a more scattering of these parts amongst general gear drops within main DS/LS energy paths.
MOD Components trade-in - Could a trade-in or swop out option be part of the JAWA trader. For Fun you could always add the flying Watto character as stars are unlocked more trade options become available and better rates of exchange at past R5 levels.
SHIPS - For the love of... make it a little easier for these shards to drop! It is so painfully slow to get these shards.
League SHARD Switch - Not sure if this is possible but it would be nice to have the ability to re-register into a new shard that is perhaps within a current GP range. This could allow players especially if returning to the game to re-allocate to a level player shard instead of being stuck in an advanced SHARD. Perhaps this option could be a payable Pass + thing but limited.
Episode Pass +, make conquest pass part of the extra pass offering rather than a separate thing. So the basic Episode pass would not have this but the Pass+ would.