That doesn't change anything I just said. All you're saying is that the old system had the chance of spawning the HQ on the fifth day. This still doesn't change that people didn't care for the NQ spawns aside from ToD towards the HQ spawn days. This is why you see people going to solo Behemoth and Adamantoise on guaranteed NQ pop days. No one wants anything from these spawns because they drop crafting materials at best. Nowadays things like behemoth leathers are dime a dozen, same goes for adaman ore.
Take a loot at your average loot pool from Behemoth for example. 2 behemoth hides and a thundercloud. Now take a loot at your average Fafnir pool. Dragon heart, dragon scales, wyrm beard, Aegishjalmr, Andvaranauts, and Aquarius feet. Now that's just a typical Fafnir pool. If you're lucky, you're getting yourself a Ridill, earthen hands, and neptunal head. What do you get from the very best Behemoth pool? The same as what I just said above.
Fafnir drops abjurations that people want and a weapon that's still considered a "rank 1" item in Bonanzas. Behemoth and Adamantoise drop nothing at all that anyone seriously cares about.