No pause short days seems good, but I think fewest days makes both the timing of the run more difficult (percentage of current moon is harder to gage) and the run less enjoyable. No one would ever hit tab to speed up in game time, and this makes everything in the game slower (pack opening, resource gathering, etc). Additionally, no cleared save could end up becoming a problem. Getting a record = storing enough money to get a couple sets of the last two packs. Then you just get lucky (goblet, bricks, planks, and iron ore deposit). Having cleared save still relies on some of this luck, but the skill involved in unlocking packs quickly helps lessen rng dependence. Also, as stackman has been proving lately, cleared save means iron from an early mine may be better than explorer pack unlock.

These are my reservations, but I am open to seeing non-cleared save if you are. Not too interested in moon-based timer currently, but I'd love to hear counter arguments