You mean Fasting day *and* No manufacturing day?
Not to mention the distinction between fighter and PKer, where no drop day hurts as well.
Gimme my "filled tommy day" and sure, then I'm for balancing peace day with lord of the flies.
Here's some perspective:
Acid Rain day: does not force anything, lowers rate of flower harvesting.
Day of Fasting: forces fighting with stock of SR/BR/Essences
Day of more grief: does not force anything
Day of no grief: does not force anything, beneficial to all.
Day of the brave: does not force anything, decreases training options, increases demand for rostogol stones
Day of the dead: does not force anything, slight increase in resource consumption with less return value
Day of the print: does not force anything, beneficial only to people who still need knowledge
Decreased rare manufacturing day: does not force anything, temporarily increases EFE price
Green Day: does not force anything *until* stocks are out, but economy can handle. Significant slowdown for new characters.
Healing day: does not force anything, beneficial to all.
Increased harvesting events day: does not force anything; slight increase in breaking pickaxes and frequent flyer miles.
Increased rare manufacturing day: does not force anything, beneficial to all (slight drop in armor prices)
Labor day: forces fighting, more storage runs (bones vs bone powder, non-stackable sr's vs ingredients), overcamped spawns
No drops day: does not force anything, decreases manufacturing of products needing animal dropped ingredients, hard on summoners, hard on fighters that need drops to pay for their breaking items.
Peace day: forces manufacturing, decreases manufacturing of products needing animal dropped ingredients, hard on summoners.
Reconstruction day: does not force anything, beneficial to all
Scholars day: does not force anything, beneficial to all
Scientists day: does not force anything, beneficial only to people who have the nexuses but lack the knowledge
Scotties vacation: does not force anything, beneficial to crafters
Solar Flares day: does not force anything, hard on newbies and afk-people without FR
So there's 2 days that force fighting, 1 that forces manufacturing. With force, I do mean, you do not have the option at all. No drops day, doesn't affect PKers anymore then rostos do.