1) Event limited, we're going to host quite a few events, and there will most likely always be an event active for some sort of plot or limited reason.
2) Off limits? As I always say, knowing a limit to a clan is not really possible unless you create the clan first. If you want stat boosts, make it balanced, have drawbacks equal to the stat boosts, etc etc etc. Balance is key.
3) Advanced releases are KKG only, your clan may have one advanced release. If it has multiple, within reason, such as the terumi clan's lava and boil release, then only one of the releases can be chosen. If they want the others, they'll have to get them implanted through the use of another's dna.
4) Definitely within this week