A unified train mod that adds, with a setting to toggle each separately:

-Higher Train Tiers

-Higher Wagon Tiers

-Powered Rails that carry power and circuit signals

-Electric Trains that use power from rails, and benefit from Regenerative Braking (And tiers)

-Hybrid Trains, that can use either fuel or power from rails, and benefit from Regenerative Braking (And tiers)

-Nuclear Trains, that use nuclear fuel cells (And tiers)

-Hybrid Nuclear Trains, that can use either fuel cells or power from rails, and benefit from Regenerative Braking (And tiers)

-Electric Wagons that can only be used with Electric or Hybrid trains (And tiers)

-A weight setting to increase rolling stock mass

I have a Patreon https://www.patreon.com/user?u=6831316 and Ko-fi https://ko-fi.com/jamesfire if you think this is worth that.

And I have a Discord Server https://discord.gg/fdqys7WcuS