I have to admit, I feel OP is correct.
The way coil is set up it basically promotes 8 man cliques. I see it in others, I see it in my group, I even see it in myself at times. It forces you to run with 8 people every week (f you want to make the most out of coil, that is). If you try to swap people around to keep things fresh, you start to run into all sorts of problems like scheduling, player compatibility (I don't like X because he's a doody head!), job compatibility, player loot priorities, etc, etc. My own FC leader quit because sorting out coil groups became more like work. Afterwards, a few people of the FC left and there were a few who were left in quite a predicament - I want to stay with this FC, but half of my group left. In the end they were damned if they do, damned if they don't because their group had such good loot distribution they didn't want to split up.
When I saw the Crystal Tower loot system all I could think was (after getting over the fact that CT even HAD a loot system) "Why couldn't coil have had that?" It allows everyone to play with anyone, regardless of whether they'd already ran coil that week. The current system really forces you to stick with your group of 8.