If my understanding of all this is correct , this fix doesn’t seem all the difficult to implement..
I could see where you might get some of these impressions...
There exists a group of people who invested in 3D televisions that are older and do not use the format that DirecTV has decided to pursue. Understandable these people are not happy with this.
Some of the individuals have found various ways to deal with the problem with some success.
Adding other equipment to the process, such as AVR's appears to interfere with the solution they have found.
What seems to be escaping everyone is the fact that a) DirecTV picked a format to support
only a very small group of people are affected by the problem because c) hardly anyone is watching 3D at all in the first place.
Should 3D actually become a major selling item in the future, DirecTV has already positioned itself to supply programming in the format that seems to be the dominant format.. at least all the manufacturers seem to building equipment to support it... and since so few people invested in 3D in the unsupported format, I would consider it unlikely that DirecTV is going to make a changes from its current approach notwithstanding the desires of the people who would like to see it so.
Based just on the poll for this thread we are talking about a group of people that is statistically small.
People are just starting to buy 3D capable hardware (that is compliant) and it is being sold at premium prices in economic times that positively suck. It is still a risky purchase.
Even among manufacturers that are using the same 3D format, the glasses aren't necessarily interchangeable. Panasonic glasses are working on Samsung but the reverse is not true.
2 standards have been set.. Blu-Ray 3D specifications are complete. HDMI specifications are complete. TV specs are NOT, at least 2 manufacturers, Toshiba & Hitachi are working on a completely different 3D format.
If someone buys a 3D Blu-Ray player 3D TV today, these will work together and DirecTV's implementation of 3D will work as well, so as 3D sales come into some semblence of the mainstream DirecTV is well positioned.
Keep in mind, the entire universe of 3D TV owners who are also DirecTV subscribers is a statistically insignificant universe. There are enormous hurdles ahead for any large adoption of 3D. I do not see DirecTV expending an enormous effort into deviating from the current specifications.
It would be much easier for the small group of people to connect in such a way as to eliminate the AVR problem and deliver audio from the TV to the AVR instead of from the HD DVR to the AVR. It wouldn't be the best implementation but it would work and considering their tv's weren't supported in the first place a reasonable solution.
If I were DirecTV I would be leary of deviating from my planned course, particularly when there is no way of knowing what other methods may come along to bring these older TV's into compliance with the current standards.