[brachkow]

Kazakhstan decided to do so, but Poland always had Latin alphabet.

Ukraine always had Cyrillic alphabet. There is no way, they will reject their culture just to punish foe. Also Cyrillics is tied to orthodox Christianity which has very big role in Ukraine.

In that context is more interesting that way more pro-russian Belarus, has some use of Latin (mostly in geographical standards) based on Latin variant, heavily inspired by Polish language.

By the way, parent of Belarusian and Ukrainian, the Ruthenian language (not related to Russian, Ruthenian was the second language of PLC), has a lot of alphabets including Latin and Arabics. First was caused by spread of Polish language, and second by large number of Tatar Muslims settled there.