Just a comment on 1. I’ve played a number of Paul’s post 2009 (when he took over the company) basses and, while I loved Pete, Paul’s basses are a shade above his best output in build and playability. Pretty much perfect basses!
On old ones, I really wouldn’t stress too much over the necks. You tend to hear lots of grief about 1 or 2 basses where an owner has problems but nothing about the vast majority which are super stable. Plus you don’t know the history. There was someone stressing about bodies delaminating on Facebook a while back coz he’d seen one where the top edge had started peeling away online somewhere. A bit of collective detective work showed that this bass had been stored for several years in an outdoor garage, no case and literally had water dripping over it! Lol! Yet now this guy was stressing that if he bought a Wal and sneezed, the front and back would literally fall off! (I exaggerate but not too much).
In my experience 99.99% of Wal necks are super stable, especially with the laminate structure and the care taken in building. In fact, in the mid 80s the company ditched English hornbeam as their centre laminates because they felt it was a shade too stiff!
Finally, one thing to remember is that as far as exchange rates are concerned, with Brexit tanking the value of the pound each of your dollars is worth literally twice what it was back in the mid-2000s when you got nearly 2$ to the £ instead of near parity as we have now ( $1.2 to £1 at the mo).
On comms, like others have said, it’s literally two men and a dog in the workshop. But we see plenty of part build photos being posted by folks along the way so they do their best to keep you updated.