There was enough evidence from day one to go through the legal notions, this doesn't really have any effect on what was going on.
The problem is that this has been dragged for so long that it would kill the democratic party at this point, HRC is the nominee this whole thing should've been cleared way before the primaries.
If Hillary was "smart" she should've pushed for a full investigation before that she could've survived it then, at this point if any indictment would be pushed forward it's game over for for HRC and for Democratic Party.