I hear you about capss lock. In face with my Macbook air, if I'm on location, I often have to walk it into the shade to see if cap lock is on.
I wish I had a light on my iPad Pro Keyboard to indicate it was on even if I had to walk into the shade to see it.
Why not just type one character and see what appears on your screen? Wouldn't that be much easier than the alternatives?
I never notice that the light on my keyboard is lit until I look at it after typing CAPS that should have been caps.