Hi, I love this mod, it really gives a sense of progression for train system.

I have a few suggestions below:

1. Rebalancing the power consumption. The base locomotive uses 600kW power, the new trains starts from 2.2MW -> 2.4 -> 2.6 which is very steep starting off and then very shallow curve. I'd suggest 720kW -> 960kW -> 1.2MW to match the max speed progression.

2. Compatability with https://mods.factorio.com/mod/SchallTransportGroup . It's a very handy mod to consolidate transportation-related stuff. Previous version of your mod worked fine with it; however in the latest version, all the new stuff stays in the vanila tab instead of moved over.

Suggestions accepted.

1. Power consumption scales with the squared ratio of speeds (Mk1 speed: 1.2 to Mk2 speed: 1.6 -> (1.6/1.2)^2 -> x1.8 power consumption)

2. Added custom compat for Schall Transport Groups

Awesome, thank you for being so responsive!