The Zion experience works as a model if Dresden closes and moves into the decommissioning phase sooner rather than later. At TMI, Exelon opted for the SAFSTOR route and said they wouldn't do any major dismantlement until 2074. I don't know what your decommissioning fund looks like, but we don't have enough to think about moving in that direction here. Exelon isn't in the business of decommissioning, so presumably another outfit would come in to take the license (Oyster Creek and Holtec) or manage the project (Zion and Energy Solutions). Several of the SROs took positions at other sites (Calvert, Peach, Limerick) in Ops training or FLS in Maintenance or Chemistry. They were really good about getting people placed from the Ops side (most disciplines honestly aside from RP) at the plants they wanted but different disciplines. I know of only one RO who chose to go through class again for a different site. The RO class that was in progress was allowed to finish, despite the impending shutdown, and received their bonus. Several left after the defueling, and a couple stayed.
As a simple RP tech, I can't speak to all the specifics of Ops and SROs, but I do know what it's like hanging around after the plant shuts down though. Staffing is fluid beyond the required ERO numbers needed during the Zirc Fire Window. I can go into more detail over a PM. Best wishes to you either way. I hate to see it happen to anyone else.