I think foreign policy will be most important topic on the next presidential elections.
Rand Paul argued "we're a lot worse off with Hussein gone" in Iraq and cited George HW Bush to criticize Jeb Bush's position on the Iraq War
I don't think people completely changed their mind after what happened in Crimea and Donetsk/Luhansk. Look at the elections in Kharkov for example. Yes there are more people leaning toward EU now but if reforms will fail or economic growth will not be strong enough people will start looking toward east neighbors again. It is not about which political system is better it is about which one suites the current state of society.