A lot seems to have happened on this subject while I was away.
Admin rules the site and makes the rules. He is looking for input for what looks like a rather positive initiative in a business which is regarded by a lot (most?) of the population in a rather jaded manner, and he clearly has an idea in mind, without knowing how, or to what extent, to implement it.
Bottom line - Admin appears to believe that some banned members could be unbanned through payment of an "indulgence" as the mediaeval RCs would call it. However, as Admin makes the rules, it would be up to him as to which members should be unbanned on that basis, because based on some of the comments here, there are some who should be condemned to all seven layers of Hell and never unbanned.
My recommendation to Admin would be to go for something related to anti-trafficking, since there is none of us (unbanned) members who want anything to do with that seedy business, so he should receive a 100% support rating on that choice.
In the final analysis, it is only Admin who knows exactly why anyone was banned and who, with a slap on the wrist of a donation (size dependent on infraction that caused banning) would be able to unban them - maybe with a probationary period - again dependent on infraction.