Eh i'm not sure about that, imo best coil party is gonna be pali, warrior, scholar, whm, bard, black mage, summoner and monk. That allows for a dps split between physical and magical, gives full LB speed and takes advantage of changes made. Now the reason I still think 3 ranged is optimal is because the principle reason that melee DPS have been losing out to caster DPS is sustainability due to boss mechanics. Due to dealing with less boss mechanics being at a range, ranged DPS have more sustainability. Now while these buffs are made to circumvent that, physical DPS are still going to have to deal with said mechanics (which seriously instead of buffing melee classes, make ranged deal with more mechanic), and in terms of coil and primals, ranged dps are typically the safer bet. Also, non healer ressing is a nice utility to hold on to as well.
But that's just my opinion on it.