Does the current modding API give access to a unit move function/command?

Oh nooo, someone is using something I made for knowledge, that's never good.

On a more serous note, that hasn't been updated in a while...

It works the same as everything else in the action bar (attack, patrol, etc) even if the button isn't there anymore.

So it could be used... though creating pings would be really ugly, as they also show up in replays and for other players.
Meh... somebody come up with a hack to get the current position of the camera.

With create-unit and something like the puppetmaster drop-pod-launcher (zero health), you could use created events. But that's some annoying prereqs.

Wasn't create unit only at the location of the mouse? So you can get the world coordinates of the mouse via cheats.

Cleverness. I guess now I need to wrap my head around modding PA so I can try and figure out your clever hack, @cola_colin!

Sorry to put you down, but that won't be part of the discussion at all. The only question is whether you are providing the options for everyone or just for players who are willing to dig a bit deeper. It's either providing the API on your own, or having it reverse engineered. It has been like that in EVERY game before, and the longer you wait, the higher the risk of reverse engineering happening.

Which also means having hacks flying around which are peeking and poking at the memory with admin permissions rather than using the JS sandbox.

Besides, if it possible to "cheat" by acting as a client it just means that you have exploitable mechanics. No less no more.

Yes, though I misspoke; create-unit doesn't fire the create event, so you'd actually be looking for the destroyed event.

You should be able to copy paste my example cost and that will give you the second of the functions you asked for.
Now the next issue will be the question where to start your movement. The only idea I have for that is the ask the player to make a ping.