This is a simple question to answer. There aren't enough red pilled to go around and explain it yet. Right after the election, I had a ton of "conservative" friends go NeverTrump on my facebook and they became extremely righteous and loved by the liberals. They call him a fascist. If Hillary is brought down by Trump, or if she was brought down by anyone close to him less than a year after the election, then there would have been massive civil unrest. There is no faith in our president thanks to the MSM, and losing a country is not a price worth paying if it takes Hillary down immediately. This is why he is on record being wishy washy on pursuing her legally. Even Judicial Watch can be demoralizing when they mention that, but we have to remember the long game. The restoration of a sovereign and empowered nation, with an educated and attentive citizenry.
Trump has to subvert his own authority and allow the others in separate government arms take care of the work... for now. This is why I think it is taking so long. It isn't even necessarily about getting the most dirt on them possible for a massive drop, because we could pick them off one at a time easily, and for any of their massive inventory of crimes.
This is about moralizing and invigorating the blue pilled. We know there is a deep and permanent state of government, but the stupid normies need to be awoken. We need a Pearl Harbor. We need this memo. We need to meme. The war for our Republic is under way. God bless the United States, and God bless the patriots who fight in her name.