As a Croatian i don't consider myself eastern european ( if i had to pick a side of the world i'd say more south than east ) and definetley not even close to Bulgaria, Romania and Hungary ( i do have Hungarian last name so my roots are from Hungary from couple of centuries back ) cultural and laguage wise.
I have no problem being put in the same basket with ex-Yu nations, we share allot of cutural, language and other similarities and basically i consider us to be the same ( or very similar ) people of different religions in this Western Balkan region. Bulgaria, Romania are quite different and we share nothing in common.
So pweeety please add a ex-yu or whatever you want to call it option so i can vote.
cheers!
edit: Now when i look better at you options i feel you have a quite weird seeing of Europe and grouping people together.