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A simple question: what could a "fascist-Banderite" do if they came to power? Let's set aside the fact that they won't gain complete power, as there are many other political forces. But let's assume they did.
Well, they would introduce the glorification of the UPA. They would ban the Communist Party (who would be sorry for this corrupt group under the proud name – it's not communists anymore).
They won't be able to do anything against other nations – Europe is nearby. Especially against "Jews" – they'll immediately be accused of anti-Semitism. And trying to do something like in Latvia, through language, is ineffective; Ukrainian is not Latvian, and people will learn Russian without any particular problems. Limiting immigration also isn't a big deal. That's all the much-vaunted fascism amounts to.
At least, a "fascist-Banderite" wouldn't disband the army and wouldn't let the state fall apart, unlike the current ones.