This post has been edited 1 times, last edit by "ALLODS-ONLINE-PLAYER" (Dec 12th 2016, 12:53am)
In addendum, I'm fairly certain this is by design. Locking you out from doing higher layer astral without heavy grinding for myths and higher efficiency epics is a great way to make you spend money, either on a better earring via strongboxes or replicators and uncurse scrolls. It's underhanded as hell, unfair by all means, and super transparent, but that just means it's probably true based on everything else in the game.You can make 147k with blue earring (even with 2 blue at 95%), but you need crafted fabled 73 instead of crafted epic 75.
Each one gives roughly 600GS more than epic 75 @ 100%.
Basically you can achieve it with 3 or 4 fabled 73 depending on your epic drop quality, the more fabled 73 you have the merrier because you'll save more mats to craft leggy 75 (i.e. optimizing meteorite resources).
It's pretty much impossible to do without fabled 73, but you're supposed to go raiding every week to be able to craft them or transform fabled 71 into 73.
You'll need an epic earring if you want to reach 160k while spending the least amount of meteorite, but it"s still doable with a blue one : craft 1 more leggy 75 than required and you're there. All the other crafted need to be fabled 73 ofc.
So I don't see a blue earring as a limiting factor, except for the fact you'll spend a bit more resources than players with epic or leggy earring.