I can't agree with some of your formulations, in particular 2 and 4. It implies that now "Eastern Ukraine" has its own will and ability to implement it. In fact it is now an "area in chaos": people are disoriented and terrorized by Russian diversants destroying the infrastructure and arming and organizing local poorest people and criminals into gangs and directing that gangs with no purpose apart pure destruction.

In my opinion options of 2 and 3 can become available only after achieving option 1. The population most probably would support option 1 if asked (60%) or 2 which is mainly the same. Actual support from population of option 4 is close to 0 but it is possible as a result of massive Russian military invasion. Option 5 has some support (about 20% but unstable) though I don't believe that Putin is crazy enough for that. He is not going to take responsibility for those people, he just decieve them through Russian press to use as tools.