Personally I think #PizzaGate will struggle to pin incriminating evidence on those in question, if any progress is to be made it will most likely come from expanding out and seeing if there are inroads back towards it. I.e. the Clinton Foundation is operating as a money laundering hub - this is provable and the focus of my attention at the moment.
There is suspicion about ties to human trafficking operations, but once again - difficult to prove. This whole PizzaGate investigation will gradually re-correct course towards the Anthony Wiener, Hume Abiden, and Hillarys handling of SPI/SAP information - this is essentially what the FBI investigation was founded on.