First of all great job with the story! I really enjoyed it. Can't wait to see where it goes next. I also like the GC concept. I do however have a couple suggestions to improve it;
-1st please add all the daily quests to it i.e. GSI, Rishi etc... Also for Daily quest you only have to do 4 to get completion. Can you make the Heroics standard as well? Some are 3 and some are 7 for completion. I'd suggest change all heroics to 3 for completion.
-2nd please add in game events to it i.e. Gree, Bounty Hunter, and Rakghoul outbreak.
-3rd please up the rewards for elites from 1 to 5, mission completion from 20 to 50 and weeklies from 20 to 100.
-4th add a GC vendor to buy the equipment and crafting schematics for the previous rank once you hit the rank cap i.e. 100, 200, and 300. I think this will help a lot.
-5th going with your play how you like concept, is it possible to add daily/weekly crew skill quests for us crafters kind of like what you did with the "Inflicting Comfort" quest. A good way to implement this would be to have a quest giver in the crew skill area of fleet.
-6th please make GC rank legacy. We have lots of alts!
One last suggestion that has nothing to do with GC but would dramatically improve QOL, please add a legacy wallet. I and many others would pay CC for this.
Once again great job and thank you! I love this game and want to see it succeed.