Yes the standard is cut out. Hope it doesn´t mean I have to buy new expensive true 120 hertz lcd tvs to enjoy it. Most LCD TVs with 120hz are not really 120hz they are just doubling images and the real once costs like nothing else
As for player the PS 3 is promised to be updated for 3D support so home free on that front anyway.
As for 3D a gimmick. Yes everything that actually enhance immersion can be seen as a gimmick. Sound is not needed to tell a story you can use subtitles. Visuals black and white is just fine. You can tell a story in 2D in stop motion as well .
It all depends on the execution but surely the technique is good enough to add more then it ev takes away.
3D is here to stay. All major studios have committed to it even though the technology is not yet perfected. Avatar is in the forefront of it. Much of the cg work was done in Weta (Peter Jackson's company). Another 3D film I saw recently was A Christmas Carol. That was a Dicken's story told with motion capture in 3D(!) and I enjoyed it very much(after I got past the dead eyes and stiff facial expressions.).
Apart from Avatar, the most impressive 3D film I have seen was U2 3D. It was amazing. The integration of visual element and sound really worked well.
As for 3d at home, you will need a special set to do it properly. I understand that it is also in a development stage so I wouldn't rush for anything that is out there at the moment. People who are working on that are well aware of how sensitive general public are when it comes to pricing. The goal is to set the price of a 3D set similar to a non 3d one eventually. Looks like it won't happen for the next couple of years.