Completely agree. Galaxy map needs a big overhaul. Better route planning, logging, favourites, filtering base on range (e.g. hide everything over 30ly) etc.
If I'm running a trade route for any length of time I set-up a List button on the CH Throttle that cycles through the route, i.e. first time you press it it pastes your first destination into the search box, second time you press it it types the next destination etc. It's a nuisance having to set something like this up outside the game, but it does save time/hassle/typing in the long run. Especially useful if you run long rare routes...no more having to remember what the next system is on your journey!
Depends on the controller you are using of course, but I'm pretty sure that a few controllers can do this (I know Logitech can as well for instance).