good update i think. its considered and realistic and most importantly seems like you are being honest with yourself.
I fully get what you mean about the generations of posters - I find it hard to look at some of the new newcomers stories just because it takes me back to when i was in their shoes and although i can move past that with my life and my decisions i'm not feeling quite ready to go back there at the moment.
as for mediation i think you're right to visualise how you want to it go and you need to expect it to go well however you can shift your thinking to that place
Anyway hope your otherwise ok
Both mid 30s, 2 young kids BD 7sep14 XW moved on long ago, now living with OM1 D paperwork in progress