I am glad to hear that WMF global bans are processed through multiple people. Still, I am deeply uncomfortable with the lack of community involvement in this process as well as the lack of transparency. In the US we don't trust professional law enforcement agencies to make decisions about who should go to jail without giving the accused the right to a trial by a jury of their peers. Unless we have lost faith in peer governance (which would be a radical break with open source philosophy) I think it is both unwise and inappropriate to have "the professionals" make these decisions behind closed doors and with zero community involvement in the process.
I am in favor of professionals working on investigations, and in enforcement of community decisions to ban *after* those decisions have been made by the community through some meaningful due process. I oppose letting "the professionals" decide among themselves who should be banned.