Here is an attempt on the WBOIT technique mentioned by @tfoller . Sadly I can only forward you to it, because to be honest, this stuff is above my league and fry my brain. There was some discussion to maybe include something similar into three’s core as well (transparency depth is always a hot topic). But the amount of people knowledgeable about this is quite scarce 
To summarize, the goal is to avoid classic sorting altogether. And aim for a more abstract angle.
More theory here: Casual Effects: Weighted, Blended Order-Independent Transparency