So what would you spend it on? Some of my all-time favourites for this kind of wishful thinking:
Waldorf Wave (one of the most beautiful synths ever to me).
Alesis Andromeda.
Complete Doepfer modular system, extended with lots of cool other modules from other manufacturers.
MiniMoog Voyager with Moogerfooger expanders.
Korg M3 with the Radias synth module... Great sound and one of the best modern synth designs.
Oh yes, and I'll have the Oasys, thank you!
I guess I'd still have lots left over... I'll think of some more good stuff to expand this list.