I would like to request that someone makes a script that would track the number of (mod) furnaces put down and keep track of when each finishes an item. Each time an item would be finished the aliens would de-evolve. I am only requesting the script, because i can make rest of the mod myself.

That is also written into the wiki (also by me, to make clear that this is currently just my opinion): https://forums.factorio.com/wiki/index.php?title=Railway/Deadlocks It is my opinion aswell. And as far as I've tested it it is correct. That is why i have trouble beliving that junction doesnt dea...

Have you actually tested if your train junction works? Because for one the signals are to close together, not to mention having signals within a junction is already a bad idea. Two trains come and BOOM deadlock.

The playlist indeed doesn't exist. Checked his page.

Did you enable all your cores in options? I think the default setting is 1 or 2 cores only.