If you don't mind my asking -- Which are the production enhancements that users have long been asking for, and not got? Funnily enough, I'd been taking a re-look at Turbocad because of DC (I have TC14 Std, lying disused) - and finding that things were not a awkward as I'd first thought (inputting dimensions, especially). Still, it's nowhere near as convenient as, for example, typing DY to go directly to the DeltaY input.
I was hoping that a modified command line - ala Sketchup, and a lot of other 3d programs - would make it's way to TurboCad. Apparently not (Can you confirm this?). When Autocad is quite happy to borrow features from it's competitors (Floating menus: Intellicad, Polar Tracking...), I don't see any reason for Turbocad not to do so. In the computer world, it's all about convergence, anyway.
Just my 2c.