I have flashed a whole variety of 6 and 6.5 ROM's without ever having an issue. So why won't it flash back now? Hence why I think it's the boot loader(s).
So, what are my options?
1) Can I short pin it? How do I do this.. what boot loader do I need on the phone? Is a boot loader necessary for this?
2) What other software tools might I be able to try, bearing in mind I can't load anything other than a bootloader and flash stuff that doesn't work.
3) Get a different boot loader??
(And frankly: Whilst we all except the risks of flashing ROM's, there seem to be a lot of people trying WP7 and failing, and being bricked.. I believe there is a common cause and we can revive people's phones - more than just mine).