easy said:Front panels that you dont have to **** about with to put on early bays!
In fact all panels made correctly that fit and are of a quality. If you get that and the name is out there, people will purchase every time and it will make every one else pick up their game, as cheap repro panels are turd and in this modern age we have ze technology! 8)
This, especially the front panels - converting the repro front panels to early (including the badge bulge) is a nightmare of a job...
For the steering boxes, just the worm/peg (parts that normally wear a flat) would be the most important bit to be re-made.
If I were looking for a new box, I'd be happy with an exchange box with those parts replaced. Or to buy the parts to fit them myself.