What perks? How would 'Novorossia' "rise up" and especially without economic/financial help from Moscow which is going to be less and less, probably?
Both territories in Ukraine are in trouble. I don't think the EU nor the USA want Ukraine to default. They don't want a total re-structuring of the economy or the system unless it's patterned off of the EU. The IMF has even given Russia loans in the past. The IMF and EU have thrown bad money at economies and I don't see Ukraine being much different. How that comes to be, though, I would not speculate. But, I would guess that they (USA et al.) would not want Ukraine to default or go 'officially' bankrupt without getting some sort of loan first. Some of the citizens can be volatile so if the new administration defaults and they have even 'less' services available...
This is just speculation, though. What scenario do you foresee with a default?