Interesting re the anti sway bar disconnect. I assume your Disco is the GS , without ACE ? Whatever, it is encouraging that you can live with the disconnect.

The ACE on my car works reliably , but if it ever gives trouble - I will simply disconnect.

I see a recent report on the 4x4 community website concerning quick disconnectors for the front - also a possibility.

Have you extended the  brake lines/ speed sensors ?

Dave