Got it! I wanted to avoid things like highlighting the current active character with an outline, but it might be necessary. Right now, there's just a sound effect + momentary highlight on the active character when they're assigned turns.
Others have given the same feedback about movement mode. The reason I made it this way was to avoid "mislicks" while we're scanning the environment with the mouse. But I take the feedback - I'll be making shift to move a toggled option instead, so people can choose their preference.