TL;DR
When changing train stop names, the list that shows should be filtered like the train schedule search box is.What ?
There is a screen with a list of train stops when you change the name of a train stop. This is very useful if you want to re-use an existing train stop name, but massively becomes less useful as you have more stop names. It should be filtered based on the text you start to type so that you can partially type a station name, then click on a matching one to fill the text box. Single click to fill the text box, allowing small changes, double click or Click > confirm / Enter to actually lock it in.Why ?
Having hundreds or thousands of different named stations makes the list that pops up almost useless. For example, using the scroll bar by dragging goes past more than one screen of stop names for my current modded run. If I want to copy an existing station name exactly, I've either got to type it from memory, or drag to roughly the right spot then mouse wheel up or down.Filtering would massively speed up this process.