Sounds like i'm talking about Mailman/ezmlm? Well, it's almost the same as Mailman/ezmlm, but implemented with iRedMail default built-in mailing list and managed with iRedAdmin-Pro. Let me know your opinions.
There are some good features in ezmlm and mailman both which are desireable such as user self-service and good bounce handling that shouldn't be re-invented. I think the hot ticket would be to have that integration in iredmail and got iredadminpro to have a web interface module to support it.
As you suggested however, I think the built-in list functions could work as you suggest. You'd need to put in rate limits so 'subscription confirmations' can't be used to flood remote mail boxes.
I don't see the point of having a strange ID for list management - why can't 'mylist' be used instead of 0bee89b07a248e27c83fc3d5951213c1 ?
Mike-