Are we going to see the WM Shay 6 model's front number plates and headlights corrected from the last (PS2) run of WM Shay 6's? The headlight and number plate used on those were rather far from accurate, it'd be nice to see these new models a bit closer to the real 'Big 6'. It'd go a long way to making the models stand out and really 'feel' like Big 6. Especially since many of us have seen it many times in real life, deviations from the prototype are more easily noticed on 6 I think.
No fireball would be great, too, since the fireball was only ever worn for a railfan event one time, and I think was a magnet, not actually painted on 6.