Finally an update!
Had to make a move on brakes as my first track day of the season is approaching (March, Atlanta Motorsports Park).
Wilwood offered to sell me new brakes at a discount but would not warranty or replace my kit. After much deliberation I decided partly on principle and partly on peace-of-mind to order a new brake kit from a different maker.
So I've got a StopTech kit on the way (slotted, non-zinc-coated). I will be listing my Wilwood kit in the classifieds soon in case anyone wants a kit they can get on the cheap and refurb. It'll need 1 or 2 new pistons and the rotors will either need to be turned or the rotor rings replaced.
I heavily considered the Rotora kit that Noodles worked on but ended up getting a mil discount on the StopTech kit that made the pricing gap big enough to not ignore.