I believe “statehood” and “Federalization” means the same thing in this case. Autonomy is included under that umbrella.
That used to be the Russian position. I think we’re at a point where autonomy/federalism is too little too late and the only outcome is Novorussian independence, attainable if Kiev’s forces can be expelled west of the Dnieper.
There is no reason for Moscow to settle less than for a client state in the east of Ukraine.
It will be annexation to Russia in all but name and everyone knows it