Doing more important things like investigating the 2016 election. That may fizzle and I won't speculate on whether or not it's a real investigation or not. But Congress has to police itself. The partisans who voted for the sham inquiry (two dems defected) are the enemies of America or useful idiots. Schiff is their pointman and a coniving weasel and an obvious liar. But he didn't (yet) lie under oath. As far as we know he did not (yet) destroy exculpatory evidence, although the sham inquiry allows him to suppress exculpatory evidence by stashing it in his staffer's locked safe.
People who expect a legal war against Schiff are mistaken. A shooting war is not going to happen either except for a false flag or two. At this point the only way out is voter sanity.