I think people need to settle down a bit. Don't get caught up in the excitement. This still has a ways to go.
Mueller knows that this is political, so if he wants to actually get convictions he has to play the political side as well. My prediction is he is going to save his big moves until the end of next summer. Keep in mind, the Manafort trial is set to start on May 4th.
Trump can still fire Mueller (would probably require another Saturday Night Massacre, but he can do it) and still has the power to pardon. And Republicans are such toadies that they cannot be counted on to protect Mueller from Trump no matter how damning the evidence, unless they are forced to. So, if he wants to accomplish directive to prosecute wrongdoing, he will have to wait to make the big moves until election season when the electorate can hold their representatives responsible (the electorate has a short memory, so he can't do it too early). Only the fear of getting voted out of office can be counted on to make Republicans do the right thing and shield Mueller from Trump and Republican partisanship.
So, it will probably continue to drip... drip... drip, with maybe a splash now and then for about the next 9 months. Then things will get interesting.