This is already work in progress :)
If you open the items tab of the network window, you can see that there are magnifying glass buttons under the train stop column. Clicking that button will open a view on the right that will give you a list, with minimaps, of every station providing or requesting that item, with other information. Same for the buttons in the train column. They just aren't implemented yet because they aren't really important until your base gets very large, so I've been working on higher priority stuff first.
Oh, I'm not making any claims against you in any way, I just don't know your plans and I'm throwing out ideas that come to my mind :)))
I'm not sure what you mean by automatic train recognition, if you mean the allow list, then no, that is not planned as I personally don't use that feature (and it simply does not work at all with the short wagons from pyanodon's). I may add a button to the train widget that tries to automatically pick a configured class with the matching capacities, but all that would do is save a tiny bit of typing.
Cybersyn, for example, recognizes the number of wagons and their capacity (!). Because of this, I had problems when I turned on and off the "Slow and Steady" mod. The trains that I forgot to re-register at the depot tried to carry the wrong amount of cargo :) But after re-registration, everything was fine.
Demo blueprints are planned, though I think that a video will be more useful since the actual stations are quite simple to setup, and it's more important that people understand how to configure their own stations.
It's just that I personally don't like watching videos, I prefer text with pictures :))))))))))))) But of course you are free to do as you prefer.