You are correct as far as hopes of the pro-western Maidan youth go. One note on reality however.
It is ridiculous to think that EU membership, or EU in general, can, somehow magically, solve problems with corruption and general system inefficiency of the eastern European countries.
Take a look at Romania and Bulgaria, both of which are members of EU for years. Corruption is still sky high, so much so, that Bulgaria is denied access to major EU funds. And it is not just corruption, that is the problem. There you have two EU member states, with completely failing democratic process.
Former Romanian vice Prime Minister is facing charges of attempting electoral fraud, and in Bulgaria, printing facility associated with government attempted to print no less than 350.000 illegal ballots. Both countries are a mess, and EU membership changed nothing in that respect.
Precisely for that reason, EU, struggling with its internal problems, does not want any more failed member states. As far as Balkans goes (with the exception of Croatia, that had major support from Germany), and the rest of non-EU eastern Europe, policy of EU is - keep them away from membership, but continuously press their political elites to keep declaring their commitment to future EU membership, although EU doesn't want them...
Same thing goes for Ukraine. Just before this whole mess started, there was a good article on how Ukrainian chances of becoming EU member are ziltch...
Ukraine, like Turkey, won
So, I understand
hopes of Maidan protesters, however, those are totally devoid of reality. The only success of anti-oligarch, anti-corruption Maidan, was subsequent election of arch-oligarch for president.