The president of the Russian Figure Skating Federation, Alexander Gorshkov, told Russian media that they will name their World team following the Russian Cup Final (February 18-22). It is safe to assume that they will look at their substitutes and check on the form of the others.
Alexander Samarin I think has earned his spot on the team. I also think Mikhail Kolyada should be selected, at least he showed his potential in the short program and he still finished fifth, which is obviously below expectations, but not as bad as it could have been. He sprained his wrist badly, but he nevertheless finished his performance (BTW, if he had stopped and withdrawn from the competition, Russia would have lost the third spot in the Men's with Maxim Kovtun dropping as far as he did).
I guess the Federation will look closely at Maxim and depending on how he looks and how the potential substitutes look, they might exchange him. However, Viktor Kudriavtsev said in an interview that the three men from Europeans should go to Worlds, but should prove their readiness at the Cup Final. Mikhail actually planned to attend another competition in Tallinn at the same time, don't know now if he will be sent to the Cup Final instead or if it doesn't matter where he competes as long as he competes somewhere.
Basically it is as others have said - none of the Russian men are consistent. With good performances, Mikhail Kolyada and Dmitri Aliev will be the highest scoring. I don't think it would make sense to send Andrei Lazukin to Worlds - because of low world standings, he'll skate early and he has no experience. If he makes mistakes, he might not even make the free skating, because he cannot rely on high components to save him. The juniors - also very risky. In my opinion, in addition to Kolyada, Samarin and Kovtun it only makes sense to look at Aliev and Voronov for Worlds. But I don't know how Sergei Voronov has recovered from his injury, if he is back training etc.