Accepting these people would be a really smart move on the part of Russia. It would show that Russia is fighting the regime in Ukraine as opposed to the people, and it would be incredibly demoralizing for people who got conscripted into Ukrainian army.

Yeah it would be an absolute PR coup for Russia. It would almost certainly turn into more surrenders and defections from Ukrainian units once word filters down to the front about how family members of Ukrainian conscripts have been settled in Russia and the feral orks aren't eating their skulls or whatever.