What will happen if at the end Russia succeed in her conquest against Ukraine and take over the economy of Ukraine. That will extend the economic power of Russia no doubt and that will make Russia more powerful.
How will EU and NATO countries relate with Russia if that happens ?
Russia and Ukraine's economies will be weakened after the war and billions of dollars will be required for reconstruction and all this will take years to happen. The war is still on and even though everyone expects Russia to win but we can't really tell how long it will take or Russia's plan on Ukraine.
For now it seems regime change is a priority rather than economic integration.