I am not sure what people mean by "get involved," by I think we should continue to give the aid (money and military equipment) to the Egyptian military that we have been giving for the last 3 decades. There is almost no downside and significant upside to continuing the aid.
Obviously I don't think we should get involved with troops or firing any missiles or dropping any bombs. But sending money for humanitarian purposes as well as military/police purposes seems sensible.
Morsi and the Muslim Brotherhood are, and have always been, unacceptable in terms of US interests.
And if we simply ignore El-Sisi, the country, and region entirely, or waffle and waver and act like we have no idea what we want, then someone like Russia will step in and assert their influence.