What is wrong with that? So, there is a new server, with a new set of conditions, and now a traction giant is the best train to run?
I cannot confirm your assesment in this, as I have abandoned the "Rosen" server after RN lied outright to me about the pre-conditions to this server, but on the whole I can only applaud new servers where people actually will have to think about how to run the game, instead of running the "default" a.k.a. "Meta".
If the changes go live, there will only be one cargo train engine and one pax engine selection each era. At least now there are different bests if you do "this" then X but if you do "that" then Y is better.