I organized a FC event where every member farmed shards for one single hour. Our crafters were supplied with 2-3 thousand of every shard. We did a 2 hour materia farming event that netted 2.5 million gil, we could have bought plenty of shards for our crafters that way. I see no reason to change anything, except to try and urge people in this game to start thinking of ways to work together. You'll find that almost nothing will stand in your way of progress.