Shift Right Click on a train stop to paste it onto train.

[Probe1]

Shift-right clicking a locomotive then shift-left clicking another locomotive copies its station routes.
Shift-right clicking a train stop should copy it and let you paste it onto a locomotive for ease of addition!

[ikarikeiji]

Wouldn't it be even easier to shift-right-click a train stop while a train window is open to instantly add it to the end of the train's order list?

As someone who's used to Transport Tycoon's "click Go To, then click station on map" pattern, and now has probably 100+ stations in their station list... it does start to get awkward to select from list every time.

[Ghoulish]

I tried this randomly reasoning why wouldn't it work considering the many ways this functionality is used in the game?

I think this would be a great QoL improvement - speeding things up nicely - especially if you use a long train stop naming convention.