Then don't say using PD is silly because even if you low man it you can just have that pt live through anything within 50 seconds or so which is enough for astral flow to go off and enough time to kill it, 90s = 1m30 which is what you said it took to kill. You don't need PD for every party, once you do the buffs drop the bard and cor toss another DD in and the smn + DNC, thats 4 DD protected through PD and its more than enough to kill it with all those buffs.
Not all of the same AF, people still want more than one thing etc. Point still stands that cities are generally more profitable than COP, so who cares either way? People also invite new members to an LS, not everyone likes to do things like you.City AF is rare, heard it here first folks. A full clear(doable with 10-12 btw..), will result in 20-24 AF pieces. That's an average of ~1.2 per piece, it's not very hard to cap on any of them.