How should groups disband?

i was going to say that a few of my "nugu" groups just silently went away, I think at least some announcement letting fans know would be a nice thing to do. It kind of sucks if we are waiting for things to happen and there's nothing going on and then it's like bam that's it, somehow, they are done, moved on, announced it themselves 'cause the company didn't and it's like wtf man.

groups being around for a while and deciding to disband, yet having the opportunity to thank fans, come out with something final (example nu'est) , i find that sweet and a nice way to end your time.