As far a being able to enjoy the coffee flavor and avoid the finer notes that get destroyed when using heat, seems like you might want to make a cold brew with your preferred coffee, then make a reduction from that. Since you aren't applying heat directly against the bean you are avoiding the nastiness that comes with unwanted oils coming out from the bean, but now that I am typing this, I realize that heat of reduction may destroy the finer notes of the cold brew.
As an alternative, maybe u could try dehydrating the cold brew and making a powder. Ideally freeze drying would be preferred ....
I could be wrong about all of this but it is a nice brainstorming exercise
EDITED: I did not read the entire thread so I'm not sure I am adding anything to the discussion but I can't thank you enough for starting this thread. So much good info.