If Energia were smart, they would try to extract $$ for Soyuz upgrades in the name of preparing for PPTK.They already have, see the tread "More Soyuz TMA modifications".
I mean, even more.
For example, simply upgrading the Soyuz solar panels with better cells is one thing, but making the solar panels steerable is a significant improvement that would save significant amounts of propellant.
Fitting the Soyuz descent module with the PPTS tiles may allow it to be reusable.
Modifying the location of the Soyuz thrusters may save propellant and also allow greater amounts of cargo to be carried in the orbital module (right now, use of the Soyuz 2-1b LV for the Soyuz spacecraft is pointless because of cargo limitations partially due to current thruster locations).
There may even be an opportunity to use the new Node as an orbital module in place of the current one.
I'm not saying that Energia isn't smart, but if they remember that Roskosmos seems to follow NASA's lead on these new programs, and NASA now invariably cancels its flagship programs, then they should prepare for that possibility by using available funds to upgrade the Soyuz spacecraft - which could be the only spacecraft able to carry humans to ISS for the rest of this decade.