Remember when mythic and arcane item were only could be pull into existance via popping crate, i mean those Locked Crate of the Watch. Only plat player would hv privilege to hv 1 more option to gain gold, when the f2p player had to digging for those precious red crates all the time to gain lit gold from the rich.
Well, i thought it was unfair that we free2play player had to busting our a** run every run in elite maps to get just, archon ring? Entombed hammer? Or shadowlurk egg, malison egg, nekro recipe etc.. But, now i know that time was the finest moment we hv in the history of this game.
The point is, everything is so easy now, too easy, check that mythic egg, or the set prices. Also with the amount of gold drop and gl awakening kill everything.
The problem is not gold sinking, the problem is the gold is too easy to obtain. Make it hard again an AL will become great again xD

Reduce the gold drop ( minimize as low as possible)
Best item only drop from locked

Etc