With current prices (at least on Odin) it's quite a bit more pricey to make a 99 cinder emp than it is to make a Mythic. The current state of salvage is pretty nice and it's easy to find a huge abundance of 9~10k alex again.

I'm just tired so, so of ein, I've done it so much, for my mythics and long into the past for abjurations/odin etc. It'd be cool if they added it as an Aman currency, maybe something higher tier (requiring 2-4 to redeem), but I can see why they wouldn't do that. At least with assaults you can take a 3-4 day break and do the all at once.. with Einherjar you're pretty much forced to go on a daily basis unless you wanna end up completing your mythic weeks after you've finished everything else because you're stuck on Ichor :<