My idea was that the Grand Company version you would need to buy the sub parts from other people or the marketboard, since you wouldn't have a workshop. They could add new loot that the regular player would want, instead of cryptomeria logs etc. Then the player house one + FC would be the only ones able to craft with a workshop. You'd say no thanks to this also I bet, but houses are rare enough that the market won't be that bad. There's a guy on my server with a retainer called Mannequin-j or something, and he singlehandedly undercuts every wall by 200k each time. Cafe walls have tanked to 400k per.
I also make my money mainly with walls and subs, but I would much rather every player be able to experience content rather than the select few.
