Now I'm hoping that we get the ability to somehow read the composition of train cars in a station---that paired with the selector combinator would make it relatively easy to build train stations that could automatically adjust their properties based on the length of train that's visiting them!

A bit late to the party here! All of the changes that are being announced are great, including this one! Even just not having to carry around red and green wire everywhere will be great! I notice a few small issues though: While an improvement in most ways, the shadows touching the wires on low wire...