Well if nothing else you have just made the creation of global lighting sets a simple one or two click task. That alone deserves praise and, in fact, should be a major marketing advantage for you.
However, the potential of this app is much greater. The ability to match lighting sets to high definition light image maps on the basis of a rectangular template (on the fly) is going to be huge time saver.
If I can make one more general suggestion. Take as many of the ideas that are hitting you seriously and try and build them into the app. If you are working in Python most of them are feasible.
You are now looking at a total replacement of the Poser Lighting Interface with one that is much faster and user friendly. This is one serious development. If CL were still on the go they should be talking to you. But since they are not, steer your own course.
Daz might be more interested in the future or even now. Are Daz interested in using Python in Daz Studio?
Keep talking to the Forums here and elsewhere about this. Your speedy ability to respond to ideas and further the app in real-time is a major asset. This app can go places. This is going to be a big commercial item unless I am totally wrong.

Good Luck and
Regards
STORM