Yeah that's an idea how to design itDarkvater wrote: Perhaps something like:
[Skip][Delete][Goto][Misc][Load][<>]
Where Misc (or a better name) would include a dropdown box of Priority/Non-Stop/Service (depot).
Load would contain a dropdown box of Load/Unload/Transfer with a another dropbox next to it with 0-100% in 10% increments? Then you can tell your train to load 10%, unload 30% and transfer 40% if wanted? Of course this scroller can be disabled if unload/transfer is selected if there is no code for that yet. Donnu how usable it is, but most used functions are available with one click and it still would look not too bad.

For me i do not need percential unloading or transfer. I only load in and transport the cargo to a destination. But where is the appreciation for unload 20% (what is the next question: 20% means unload 20% of cargoor unload to 20% rest cargo).
Drop down boxes are nice but i haven't worked with them in the game.