The higher drop rate of SRs and Rs means you can level stuff faster, and you have a greater selection of buffs to work with. But it also means there's more synth busywork to do each week.

More importantly, I discovered that my Water team is able to reliably full-auto AQ3 Light, which means I should be able to auto them all. That will reduce the daily grind to a more manageable level. I might very well just stop doing AQ4 altogether except on Sundays when it's free. My Water and Wind teams are decently equipped now, and I don't have enough decent SSRs worth leveling, so the trash SRs are just piling up.