The "Scions disbanding" thing didn't even make it through the very cutscene that first talked about it (which made it quite clear that they were really just done being at the immediate beck and call of the Eorzean Alliance, they were still gonna be around), and yet people still act surprised that they didn't actually disband. The mind boggles.

That said, while I don't think they need to be killed off, I would love a break from them for a while. I wouldn't object to them becoming brief cameos (hey, we found some arcane thingamajig, let's go ask Y'shtola; okay, that's what it does, see you in a few patches!), but we don't need all of them around at all times anymore. Have some brief scene where they say we can call on them in times of need (justifying using Azem's crystal to summon them for Trusts), then let them go their separate ways.