@peter-ondus "the selection action is currently reserved for the player characters" - I was able to select train stations (anywhere on the map). Do you mean, that players would think they can control the bomber, when they can select him? If he has no action-buttons in the box and the description says "this is the guy you have to delay with all your characters" then there is no way anyone would confuse him for a playable character (also it's another shape (box) and another color).
Hover text was also the first thing I thought of, but you can't hover over moving objects, also you can't click on anything inside the hover box and you might run into the issue of
A) the hover box occluding parts of the map constantly while you move your mouse towards them
B) things overlapping and the hover not displaying the correct thing (which can be solved with selection - click on the same spot again to select the other of the two overlapping things)
Current destination isn't really that important to write, because it's visible on the screen already and there it is much more clear. I'd rather highlight the route of a character when he is selected (same for the route of the bomber - one more reason to make him selectable)
In your current build, the bomber is the only thing that can't be selected, right? (except train tracks and wagons but these are more like "the map" and not really "things", like moving plattforms and their rails)
Hover + Info Box would probably lead to double information, which isn't really needed as your game is not fast paced. You pause and you have all the time in the world to select things, read things, perform and cancel and re-perform actions.
And this is also one of the reasons for the move button. You don't have an RTS or MOBA or Hack&Slash game, you have a simulation / planning game. It might be a "common action" but I finished the game with maybe a total of 10 moves.
But the main reason I suggested it is that I didn't know how to move the characters.
I lost the first round entirely because I had to find out about this one mechanic, I was left clicking, right clicking (with no character selected because I thought the characters are actions and can't be selected but are 1 character standing at a single spot instead), then I unpaused, clicked at a station (selecting it while doing so), then clicked on a character and finally, I was moving something. It was the wrong way around (which might be a bug) and I slowly figured out that I can select a character, with left click and then move the character, with left click again, which was super confusing to me.
Again, this isn't a fast paced RTS (where moving would be with right click when selecting is left click btw), it is a game about planning. Characters only have two actions Move & Special Ability. Those two actions should be visible in the info box so it is easy to understand without thinking about it. I would also add a pause button on the side of the screen and now your game can also be played on Andoid, because you reduced the inputs to their minimum. Just the left mouse button (or touch) and scrolling (or two finger gesture) for zooming.
You can add shortcuts to these buttons on the keyboard MOVE ("A"-key) ACTION ("S"-key) for example, but it is really not needed. Those things are for different genres where you have to be fast, where you need immediate control (and even in those games, the things you can trigger by a shortcut-key have a visual counterpart you can click with your mouse, even things like "MOVE" in RTS-Games).