So; the idea itself is great at idea stage, as we will need a different calendar not bound to the movement of Earth related to the Sun. If and when the future Asgardians will live in a space station in orbit, I see no sense having months with different day count, as the concept of "month" will change only to be relevant to amount of fixed amount of days and time. With no axle to rotate around and no set daylight cycle, we are going to define days only with time, and to make matters as simple as possible, a fixed amount of days in a month will be sufficient.
BUT, it is still moronic to start using this or any other kind of calendar during our time on Earth. It will only create confusion and disorder. And when we transfer ourselves to space, it should be revisited, as we (preferably) would still continue having contact to Earth, and different calendar would again create needless confusion.
Also, I still don't understand the need of 13th month (haven't read the wiki article about this kind of calendar yet).
TL;DR The concept is interesting and surely needed at some time in the distant future, but by no means necessary in a long time.