Not being an engineer, I wonder what it is about the lights that isn't correct? And can Railpro do the lights like the 1:1? I'm not sure. I seem to recall seeing BNSF locomotives have the headlight dimmed while idling, then when they are ready to move, the headlights go to full brightness and both ditchlights come to full brightness simultaneously with the headlight. Currently Railpro doesn't allow that, if that's indeed what the prototype does. It could, however, be made to do that pretty easily. In fact, with the lighting editor we could probably make it ourselves.
I do like the notching part of Protothrottle but I find myself just using the auto load feature more and more on Railpro. I used to manual notch everything but the load feature is just easier. I still want the ability to "coast" the train so it drops to idle while moving, or lock the speed while sending the prime mover to run 8 for hills (akin to Loksound). I find ways to get around it but it would be nice to have those features at my fingertips.
-Kevin