I agree with you, it is just a pity that all those who worked to improve MSTS to the stage it is at today had not also tried to help with RS, then it might also have improved to a much greater extent.
Instead of that, virtually no freeware modellers have attempted to make models for RS and we are stuck with the pay as you go items.
Anyway, I look forward to the new RS2 and will reserve judgement until I see what it can/can't do
Good luck with MEP, I really liked the early version I saw.
Mike