I can't help but wonder if part of it is that if TS2 was readily available in a form that's compatible with new computers, a lot of people who have yet to experience it would see TS4 for the hash it really is. Which is better, a 1972 Chevy (or whatever) that run like fresh from the showroom or a brand-new Klunkmobile that spends more time at 'Ernie's Garage' than you driving it?
Better yet, a new game that uses TS2 as the solid central core and then add the things from TS3 & 4 that are genuine improvements due to the advances in gaming technology over the years.
