You are making a lot of assumptions there.
Even quite simple criminal investigations leading to trial and conviction can take a long time.
Trump and his administration are dealing with a very large number of criminals, who committed numerous felonies, including working with foreign entities, which brings in a whole other level of complexity.
It is clear and obvious that a huge amount of work is being done to bring these criminals to justice. Even just reading regular news shows this to be true.
It has to be done right, the first time. There will be no “do over/oops we got it wrong must start all over again”.
One assumption that is not an assumption is that both Judicial Watch and Trump reject proof of Hillary’s server being reported to the Dept of State Information Management and Diplomatic Security in 2009 just to be clear. Based on my personal experience, other assumptions are not far fetched.