Hi Guys... regarding OS 3.9 not working with Vampire... or not being compatible... Installing OS3.9 was the first thing I installed on Vampire and I got it working, and I am by no means an expert.
One thing I have noticed with the Vampire scene is that there is a big backlash by collectors of old hardware, they get really defensive about their 68060's and old gear. I used to have an 060, ppc card. The vampire trounces it, and a Vampire accelerator offers better value for dollar.
There are enough non haters to produce a Terrible Fire style 080 card that would be a nice addition to the range of Amiga classic stuff out there...
For those sitting on the fence the FPU stuff is a work in progress but most anything I ever ran on my 060 capable of running integer works with Vampire.
By releasing a free version I reckon a 68080 will become a standard. No one else is really producing, lots of talk and multi-decade projects with slow progress. Perhaps this development will inspire growth.