The numbers are consistent with what occurred under previous presidents (it's actually much less than Clinton's 93 in '93).
The attorney serves at the pleasure of the president. If Fuji is right and Bharara thought that Trump and/or the people around him are criminals, then he should have offered his resignation before it was requested.
What should we think of people who are suspicious? I like this line from a recent National Review article by Ian Tuttle.
http://www.nationalreview.com/artic...g-normal-US-attorney-grandstands-plays-victim
A "comforting view for stupid people" is harsh but it makes the point. There's no need for me to elaborate.