In this answer I can see maybe it is possible, although I think it could be an over-use of the SE team. I think, they are for exceptional technical problems over the influence of the mods.
Maybe an automated solution could be developed for this?
If somebody asks for an irreversible, temporary suspension (if he has account on multiple SE sites, then network-wide), how is it handled? Is it even possible?
What is the best way to ask for this, if it is possible?
Also I think a suspension at one's own request shouldn't be counted as if it had been a punishment. In these cases, the punishment had been if the user hadn't been suspended.