I have a list of stuff to bring up which, now I've written it down is making me less jumpy.
I really don't want to have to take a diazepam just to get through the appointment 
I want to discuss his inability to parent without discussing with the dc.
So when he tells me he's "entirely led by the kids" what he means is they get what they wasn't. Regardless of whether what they want is appropriate or in their interests.
That he manipulates the dc into feeling sorry for him.
The whole "ds do you love me?" thing 
That he did not discuss with me his plan for introducing ow. That when I told him there were risks to early introductions he could produce no counter evidence and proceeded to blackmail me into this mediation.
That he refuses to let the dc go to parties or sleepovers in "his time" unless I "repay him" it.
His inability to recognise illness and his dismissiveness towards his sons allergy to the point of filling in forms for school incorrectly.
That he picks holes in every piece of correspondence (the 10 page analysis of the contact schedule) and wilfully misunderstands me. Yet thinks mediation will help us communicate.
These are the big things.
I won't even start in the bedtime discos, the freezer meals and junk food snacks they eat or the constant sleepovers at their gps so he can socialise. The fact he's chucking hundreds of pounds a month away on a flat the dc sleep in twice a month and eat dinner at twice a week while paying the bare minimum maintenance and never offering to pay for uniforms, shoes, coats, sports equipment etc.
Or the fact he's prepared to leave his daughter alone in bed so he could fuck his mistress while his ds and wife were in hospital.
I fucking hate this bastarding cunt and I can't help but wish he would just get hit by a bus or something 