Yes, I would absolutely join. And I will try to convince several of my friends who are newer to the game to join also. Been playing since Dec 2015 but was too nervous to commit my unengineered Diamondback Scout to DW1...alas when DW2 rolled around I didn't even hesitate, as soon as I could I signed up. Not sure how many miles I put on my Cutter, 0DE-DW, but the Gutamaya service personnel were not pleased with the state of the paint job when I returned!
As far as the Fleet Carriers, the only way to actually prevent it would be for FDev to get involved unfortunately. Maybe, next January, Brewer Corp will discover a major, previously undiscovered flaw with the Drake-class carriers and recall all back to the nearest carrier vendor (Bubble or Colonia) for maintenance that coincidentally will take about 3-4 months, after which the carriers will return to their locations beforehand. FCs could still be used/jump but they would have to remain near a vendor (500-1000LY) during the period. CMDR owners will be compensated by Brewer for the inconvenience, no weekly upkeep during this time, and the carrier transporting itself to/from the vendor for maintenance won't use any tritium. For whatever reason, a few DW carriers will conveniently not need this maintenance, letting them operate with no issue.
Just my idea on how to eliminate the issue of Fleet Carriers for the expedition in a reasonably lore-friendly way.