This indeed made my gloomy Tuesday morn a little bit brighter... I love Thief and I love game engine renderers. This reminds me to bust out my old pc and play it again.
GOG might well come out with a version and I'd be ecstatic if they made a bundle which could run predictably on a modern platform. It would certainly save me a bunch of work :)
I'm jealous - I really am ;) I know the process - hyperthreading fix, DDFix, DarkLoader, T2 meshes in T1, safe texture manager switch, reload the codecs and so on - works well for some people. I guess I'm scratching a (very large) personal itch.