The trench is the trench is the trench.
I actually really dislike people who discriminate based on regions because there's shit and toxic players everywhere regardless of the server you play on.
Like, seriously, you don't think there aren't hordes of high-ping (have you heard about Australian ISPs?), bad attitude, mic-spamming and swearing Australians on the AU server?
At least, on your more populated servers, you can actually get a more diverse pool of players to play and improve against unlike in my games where, if I check the dotabuff of any given player in any of my matches, I'll have played with that person at least 4 times. (Seriously, my friend with Dotabuff+ has been checking this for a while)
Also, l2AP then.