I'm not sure if it's just me, but one thing I hate about Unova is how linear it is. I mean, all the cities are in a straight path!
Isn't that a good thing? It means that you don't get lost as often. I remember getting lost in some of the previous games because the regions were so irregular. I liked that traveling in Unova was pretty smooth. You just have to go north until Karakusa Town, then northeast until you enter Sanyou City, then west until you get to Hiun City, then north to Raimon City, then clock-wise all the way until you reach the Pokemon League. Then after that, go east from Souryuu City and you end up back in familiar territory after a while.