Interesting. I think you have mentioned slide and Nowhere Man.

As a guitar teacher of some experience - although I've retired now - I'd say I would need to meet you to advise fully.

But start with defining what it is you want to achieve primarily and in the first instance. Choose your task and set of problems and then set about licking them. Then you're on your way to choosing the right guitar for you.

It maybe that you need another guitar for slide and open tunings. Good slide players can play with their guitars set up anyhow - but that takes alot of technique and confidence. Many of us settle for having a second guitar set up to facilitate different styles.