[Plan A: Confederacy]
"If there is one mundane fact that Russians and Ukrainians can agree on, it is that the mediaeval state of Kievan Rus is at some level ancestral to both Russia and Ukraine. Events over the centuries, from the Mongol-Turk invasion to the Bolshevik Revolution, cleaved the two apart, with Russia inheriting the classical line of descent. As its confused name suggests, Ukraine is a region on the periphery; a border-land. Its population composition reflects this buffer-state pedigree, with the north-west of the country transitionally differing from the south-east in terms of language, identity and politics.

In view of this extant polarity and the irretrievable course of events following 2014, it seems inevitable that only a national divorce and major geopolitical surgery can ameliorate such irreconcilable differences. A stable and unified Ukraine capable of being administered through Helvetic cantons is not going to happen. Typically, the entropy of such conflicts leads to a partitioning (balkanisation) or confederation. In the case of Ukraine, a combination of the two is warranted.

The unification (or re-unification) of Russia and Ukraine into a confederacy may hardly seem like a viable option at this point in time, but the question of fraternal destiny is bigger than current conflict, the Putin regime or Western intrigues.
....

But what might a confederacy look like? If Ukraine is to be persuaded and history is to be honoured, Kiev should be no less than a joint capital city along with Moscow. If Moscow is considered the Third Rome, then Kiev could become the Second Constantinople. Voting sovereignty would also have to be preserved at a confederal level, not limited to the decision to leave the confederacy with the borders that they entered it. With this proviso, Russia could then offer to relinquish control of Crimea and Donbass, as further enticement and gesture of good will, which would be a small gambit in view of the big picture."

[Plan B Partition]
"Since confederation may be unpalatable to too great a segment of Western Ukrainians, this region could form the basis for a new state: Greater Halychia.

With its capital city of Lviv—worthy of being a political and cultural prominence on the European cartograph—Greater Halychia would be free to find its destiny as a Central European state; be that as part of the EU, Visegrad Group or NATO. As further incentive still, Russia could sponsor the transfer of territory from old Polish Galicia to the new state, using its exclave of Kaliningrad to barter with the Poles.[5] Poland would be only too willing to lose its border with Russia, gain prime real-estate on the Baltic; while Russia would be satisfied with new frontiers on the Black Sea, Romania and the opportunity to reunite with its long lost orphan Transnistria.

https://english.pravda.ru/opinion/150821-eastern_europe_map_ukraine/

Bold vision?
Wishful thinking?