Community port of Realistic Electric Trains to Factorio 2.0 with Space Exploration compatibility. Electric trains powered by overhead line poles. Original mod by J_Aetherwing.
I'm glad you're keeping this mod alive. I can't tell you what is a good use of your free time, but I am hoping to test compatibility between this and my other mods which I already updated. I like to get my mods updated during experimental so that I can report bugs in the API and finish my testing before the "stable crowd" starts complaining.
FWIW, the last bug I know of in the new train system will be fixed in the next experimental release. There are no API changes in the works that I've heard about. Players who use mods are more likely to use experimental--42% of today's downloads on Auto Deconstruct are for 2.1.