Bitfinex are sleazy assholes but they're not outright criminals, or that hasn't been proven yet. It's hard to tell exactly what the score is with BTC-e but it at least appears that this Vinnik fella was closely involved in its running. Then Wex.nz underwent some weird behind the scenes power struggle and here we are.
Bitfinex at least has some identifiable people involved and seems to have some unfathomable form of cred with people willing to throw money at its various sad schemes. BTC-e and children is 100% opaque. Any revival would be throwing money into a black hole and hoping for the best.