Lol, since you guys are all worried about and 8 alts abuse with loot then may i purpose this instead? How about Coil simulations? It doesn't drop loot at all and it's soul purpose is to teach players how to play the content. You'll be able to run it multiple times, that way people can dish out all of their trial and error through the simulations before tackling the real raid.

In addition this will allow FC's a way to teach members how to beat coil without the penalty of being locked out of the raid for the week.