Yes we should update to modern resolutions, and it's mandatory at some point, but that's full rewrite of the graphics engine then.
To come up with good time lasting design it's six months of planning and at least another six for creating, and additional three for testing and putting things together.
When do we take that sort of graphics break, I don't know.
Use of full available resolution for the game is of course preferred, but it's debatable if that means using all the screen for map by default.