Sounds like you basically haven't thought too much about the matter, then.
Nor is the question "which specific new borders / regions to give up" any sign of deep thinking of the matter. Tracking the history, politics, and geoplitics behind the issue over time, for the past decades at least, is what requires the actual deep thinking.
It's weird that this gets so little attention since it likely is a massive driver of war and other negative things in the system. It's almost like there's some sort of force that prevents us from thinking about such things. But what could that force(s) be? Also: is it a hard limitation, or only a lack of discovery?
Also: please do not make up rules and assert them as mandatory.
Also: which is worse, an imperfect answer, or a refusal to answer?
The exact set of borders will be decided by negotiations, and even what cities will be included, end of story. If needs be, all major currently captured cities, will have to be included (they were already part of the previous negotiations/conditions anyway).
I mean, "If you can't provide a straight answer -- then the fate of the people living there is obviously of no particular concern to you." - really? What are we, 12 year olds?
It's a BS question so that you can gloat "ah, so you want X or Y taken away" - it wont be dignified.
So that's the camp you're in, then. You could have just said so from the very beginning.
What about the 19,000 abducted minors -- does Putin get to keep them as well, "if need be"?
I'm not your bitch.
You're free as a bird here, man. I'm not making you do anything.