You sunk my battleship!! (Tactical Overlay)

What would require transparency?

the tactical overlay would, you would want to be able to see units at all times, anything visually obscuring/impairing units view is a fail.

My point was that it would be integrated into part of the surface terrain.
So instead of a mountain with all various shades of brown, we have a 1 pixel thin line interrupting the surface texture.
Minimal graphics rendering, but it gets the job done.

This is my horrible, horrible, I-have-no-photoshop-skills-mock-up.





The scale IS WAY, WAY OFF, but I hope you get the idea....
Doesn't have to be fancy, but nice, slim and very unintrusive.
The grids would be much, much better in the real game.