The thing is, most of the Mythic unlock quest line is very well balanced. The hard part is 30k Alexandrites, and with Salvage on the decline (Although SE says they're going to rejuvenate it at some point), Alexandrite is a complete pain to get. You could get all the other parts of the quest done, and still need 25000 to go.
Just allow Alex to drop off all monsters in Salvage, not just gears/chariots, and you'll be a long way toward making Mythics easier to obtain in line with the rest.