Agreed with the general proposal: the only time periods that are important to preserve are the day (coz of morning/night), the week (coz of work-week and religious days), and the year (coz of seasons). The month is pretty arbitrary.

They propose a 364-day year with 8x 30-day months and 4x 31-day months. If they're okay with a 364-day year, wouldn't it be better to have 8x 28-day months and 4x 35-day months. Or you could have 13x 28-day months. That way the day-of-week would be even more predictable.