“The problem when it does wear off and the relationship starts to fade there are no guarantees she comes back to you” < Aware of this of course BUT do you have any thoughts on the WW getting to a position when being faced with good DR’ing she might feel a certain sense of pride that she can’t go back or be unsure as to the route back to the MR is gone? Good being the lighthouse but not if the bulbs gone…
I think for me, the biggest issue I have with the path you've decided to walk is that it's all based on Limerance wearing off and her "leaving" the OM. In my thinking, even when/if limerance wears off, what makes you think that she won't just keep on keeping on with OM? She will never have to decide if she should choose you instead of OM because she knows you will always be there if things ever go wrong with OM.
In other words, unless some major malfunction occurs with them, limerance or not, she may just stay with him and never have to "choose" him over you, because she will always have you.
M - 9 1/2 years 5/5/16 - Bomb drop - 3 week EA 10/31/16 - We sold house 01/10/18 - D Finalized