So I've seen the leaf of the ethels named as Borderland and White Russland, so, as a slavic speechwritlorer, I'd say that we must rename them according to their derivations, which would seem more etymologically correct (and somewhat more politically-correct maybe).
About Ukraine name[]
So, the suggestion of renaming Ukraine to Borderland was suggested, since protoslavic root -krajь- means border, but in Ukrainian, word країна/krajina means country/ethel/land, and particle у/u means in/inside, so I'd suggest to rename Ukraine from Borderland to something like Insideland or Inethel.
About Belarus name[]
So, the -rus- part isn't exactly the same as in Russland, they have different historical roots. I'd suggest to rename it to White Ruthenland or White Rusynland.