Re: Create Light and the 17 Point Light Spell that isn't
Admittedly, I'm still in 5e, but the official way to create Light used to be Images, however big was appropriate, only to create light. In 4e, it was Change Environment.
The problem I see with your construction(s) is that I can't see why the recipient would need to be close to the grantor, or how the grantor could rescind the power at any time; if I'm holding a flashlight or torch, anybody can see what it illuminates, whether or not they're standing near me, and I can't make other people unable to see without dousing the light and turning off the power entirely.