Trimming the season by a week could be okay, but as someone who has GM experience in other leagues, that one week can really make a difference for the worse. Shorter seasons means faster turnarounds on free agency, contract extensions, trades, drafts, finance sheets, the whole nine yards. It can make it grueling. If the concern is "not enough sims each day" you could always combat that by simming 3 days a week instead of 5-6. Each sim would have 4 games, assuming a 6 week regular season. But, I assume people would rather have more sims with fewer games than the other way around.