My position is the same it always was - Russia should demand what the west always demands - full, unconditional surrender, and Ukraine leaving itself to Putin's mercy (or lack thereof). On Russia's side, personally I'd take everything as far as Dnieper in the east, cut off access to the sea (Odessa), install a friendly regime in Kiev (Yanukovych or such) with a bunch of military bases surrounding the country "just in case" - Belarus, Odessa, Dnepropetrovsk etc..
Ukraine deprived of its eastern territories would IMO be surprisingly easy to control. Something like a third of population of such a satellite would be centered around Kiev, meaning they just have to stay in control of the city. To that end, Russians could just set up a major military base on the Russian side of the river, and quickly move in, if whoever they put in power got ousted. Aside from that, the biggest city in case of rebellion would be Lvov, hardly enough of a powerbase for a NATO satellite.
Ukraine deprived of its eastern territories would IMO be surprisingly easy to control. Something like a third of population of such a satellite would be centered around Kiev, meaning they just have to stay in control of the city. To that end, Russians could just set up a major military base on the Russian side of the river, and quickly move in, if whoever they put in power got ousted. Aside from that, the biggest city in case of rebellion would be Lvov, hardly enough of a powerbase for a NATO satellite.