Well this is a great Russian team again, almost optimal. If datsyuk had a few years less, Panarin and Radulov, and maybe Voynov.
Tarasenko and Ovechkin are big names, but at least Oveckhin for me is very expendable. His peak on big ice was probably 2008 (line with Fedorov and Semin, when he was still dynamic and willing to play hard hitting game), and in this shape and time he just isnt build for it. He became PP specialist, and although Kuznetsov is not at his best right now, if you replaced Ovechkin with someone like Panarin it would be a killer line.
The only way i would try to play Ovy is with someone like Andronov and Telegin, so they hustle for him otherwise he just kills more or less any line chemistry that players like Panarin, Gusev, Dadonov , Malkin, Kucherov etc.. are able to create with great cycle.
It is yet to be seen how special team works against big teams (especially very suspect penalty killing ) and how they will be able to cope with teams like Finland, that choke the life out of every game....