Throgg The Troll King. He hasn't been around for 2.5 years, and there were a fair few people asking for him for Made to Order. He was around before Finecast, so that's maybe at least 5 years ago. I don't remember when he was first released, but your guess of 8-10 I'd say is about right, just from the sculpting style. I think with one or two exceptions, a lot of the Made to Order models so far have been stuff from what was in the range when Warhammer Fantasy Battle was ended. I can only think of Mengil's Manhides and a few Blood Bowl teams that were older that have been on a Made to Order