The consequences that count are the internal ones. No matter what you do, a person won't change unless they choose to change. What is your WS doing now to R? If she's not doing what she needs to do, how will exposure help you?
In this thread, exposure has been discussed as a manipulative action. If you have to manipulate your WS into R, how firm will the resulting commitment be? Having said that, exposing an A to OBS is a kndness, even when revenge is part of the motivation.
Letting fear drive you is antithetical to R. You need to set and maintain your boundaries. You need to let your WS know what you expect of them.
Reconciliation is hard work, but it also has payoffs that make the work worth the effort - if both partners want the payoffs and do the work needed to get them.
Yes, the SI rule of thumb is 2-5 years to recover, but it's recovery - you start out feeling awful and gradually feel better, and then feel good.
Yes R can take longer, but again, that's natural for rebuilding. One goes step by step. If R will work for you, you build a foundation, then a ground floor, etc., etc., etc. IMO, it takes a lifetime - because new issues arise all the time, and they need to be resolved, and because we change all the time, and that means adapting to new circumstances all the time.
IMO, Reconciliation morphs into M. The best Ms evolve, and that's work. As soon as you get complacent, life will throw a curve, or just place an immovable obstacle in your way.
I'd expose if I chose D. If R were on the table, I'd keep it to OBS, myself, my WS, counselors, and non-professionals - friends - who are in my corner. But I'd also develop requirements for R and end R if my WS did not meet the requirements.
I know this stuff is easier said than done.