This is my original take on BDSA. This is on deck, although I'm not sure I'll get there until July.
42% German Pilsner
25% American Pale Ale
12% German Dark Munich
5% Belgian Special B
16% Lyles Golden Syrup
3787, 149 F Single Infusion, Westmalle Profile, OG on the lower end due to high attenuation from 3787 (shooting for 1.074)
19 IBU Cascade, 7 IBU Saaz (Whole Leaf)
I've had good luck flavor wise from mixing base malt in this style.