I'm going to approach this from the angle of where I'd LIKE it to go, rather than "My opinion on what is happening and where it will therefore end up"
I'd like to see as many organizations as possible 'unified'. Not necessarily in terms of all techniques being identical (more on that in a minute) but in terms of approach, training standards and a common rank system. It would also be to the advantage of the 'sport' aspect of TKD to have one standardized competition sparring style and ruleset, I feel. I'm someone who spars under ITF rules, but I'd be happy to adjust to a WTF/ITF compromise version which would allow us all to compete under the same rules regardless of the history of our schools and umbrella organization(s).
I'd also like to see the common practice of taking effective techniques and training tools from other arts/schools and adopting them as TKD. For example, the self defence aspect in our school is not from any one art; some of it is undoubtedly there because of the Happkido influence early in the development of TKD, others are straight out of so called "reality based" systems/styles like Krav Maga, Jeet Kune Do (not a style as such, I know) and so on. We also have some limited throws which look to me like they were taken from Judo, although, of course, what works, works and all real fighting systems will have had the same basic techniques. I'd hope that the mindset that led to these 'becoming TKD' continues and the art as a whole keeps borrowing from every martial artist it comes into contact with, as well as the wealth of recorded techniques from older arts.
Controversially, I also hope we lose the tight association with Korea. Our club has no flags, we do no 'homage' to any symbol our flag at the start of our session and we do not repeat any mantras or vows. We learn the tenets and then simply make them part of the training, no repeating them out loud except at gradings, sometimes, to prove that we actually bothered to learn them. I'd like to see Korean history become something that is there and taught and which you can pay a lot of attention to if you want, but not part of the grading. For example, I find the interpretations of the Tuls to be tedious nationalistic tripe. I accept its place in the history of TKD and Korea (they needed to rebuild nationhood and TKD was born out of martial arts training for Korean soldiers) but WE and many others like us are now part of that history.. the art is evolving and we should continue to become more and more international, rather than a "Korean Martial Art".
Well, that's my thoughts anyway.
John