As long as it wouldn't siphon resources away from the SCY and LCM national meets, I would say go ahead and do it. We do seem to get along fine without a SCM national meet, though.
Or instead of a third USMS national meet, maybe try something different: maybe coordinate with Canadian Masters to have a bi-yearly North American championship meet in SCM? Have it in the fall at a time that doesn't interfere with thanksgiving or Christmas, and have it in even years so it meshes nicely with pan ams. Also include Mexican Masters...I'm assuming Mexico has a masters swimming body?
Just a thought...I have no idea how these things are actually put together!
I think the reason is that there are very few venues that could provide 2 courses of SCM at the same time.
The primary pools that my team uses are 50m x 25 yards. They could certainly be configured as SCM, but only 1 course, as they are for our small local team meets.
The pools can certainly be configured to have 2 courses of 25 yards at the same time.
As Allen previously mentioned, IUPUI in Indianapolis can run two 25 meter courses. The point I was trying to make is that USMS rules allow for the spring nationals to be either SCY or SCM. And if a viable bid was submitted with two SCM courses, I'd hope that the Championship Committee would seriously consider it as an attractive alternative to the same old boring SCY.
I think this is a good idea. Especially, since in certain areas of the country, some pools are just 25 meters. In Wisconsin, we have a SCM State Championships in December. There aren't as many that attend, but it's nice to have the option.