I think really she is in a shit position as her earning potential is really low after being out of the job market for so long. Even if she did get back into full time work soon (which is really hard if you have a gap on your CV) then the childcare costs will be so high that she will be paying out loads for care. Will you be meeting 50% of the childcare costs too? I think if you are going to truly do 50/50 shared care you need to realise that means you are liable for half of all the work and costs of raising the kids too, sure you are just pointing it out that you are in a much stronger position than her because of your job.
Those pointing out that no maintenence is legally due in 50/50 shared care then how exactly do you expect this woman to make ends meet?
Your ex wife does need to sort out her work situation straight away, would this possibly involve retraining after so long at home with the kids? Could you finance this?
I am just trying to think what I would practically do in the same situation and I think it would have to be sell the current property but split the equity in a way that enables her to get another property. How much are small family homes where you live?
It is really complicated in real terms as for instance if she moves out and rents somewhere with the kids on a short term basis and gets work and applies for UC, as soon as the house sells that lump sum will make her ineligible to claim UC, so she would need to reliably be able to secure a mortgage on wage alone by that point, so it would need to be a high enough amount, she'd need to be out of probation period and be there for at least 6 months before mortgage companies will even look at her application.
I can see now why she wants a mesher order, the other options are complete uncertainty and will be very stressful for her.
What do you think will be the best thing to happen for the kids? If they are used to having one parent at home all of this is going to be a huge change for them both all at once. Potentially two new houses, new childcarers and doing really long days with them from 8-6pm, when will they relax and rest?