TBG,
I agree about your impatience, I also have the same feeling. But do you know that my initial suggestions above are so simple they take minutes to implement, and you could be revelling in the improvemnents within minutes in some cases. The guys that do the mods are very clever but do not have all the ultimate answers or even the simplest. As a General Medical Practitioner in the UK, I can see a patient regulalrly as well as by my colleagues and not notice that they are insidiously developing Hypothyroidism, until it is pointed out by a person who sees them for the first time. You can be an expect, but it does not mean you are tuned in mentally tothe simplest of things, when your mind and training have led you forward into much more complex realms.
What I have tried to imply is that you guys with the Esoteric DV50, who feel they have the detail but not the 'musicality' or tonality' of some of the mods, are already most of the way to wards the ideal. I believe that once you have extracted the maximum amount of information it is a matter of finely tuning the information into the coherent whole. Just read the very cheap and simple tweaks I have mentioned above.
The simplest is adding in the Tube buffer the musical fidelity x10D. For a $100 you have added a tube in the circuit. The tube in the professional mods simply make the digital signal mor linear. Ok with my method the tube is used after the output stage, and this will be a compromise, but for a small outlay you could mimic the circuits used by the professionals and not wait for months!
I am not saying this will beat what the mod experts are doing, and I do appreciate their work, but you can at least have fun, without destroying your equipment which can give you quick answers. None of the modders have as yet put an output stage in the DV50 you could do a similar feat with the add on box and find out of what value a valve will be in the circuit. I bet it will significantly improve the sound in a silmilar manner to the prior valve/ digital mods.
doc Luke