My guild has a player with a longish name which includes a special character and nobody is really sure how to pronounce it. On TS one night, one of the guildies made several humourous attempts at trying to get this poor player's name right, and eventually said: "Kere... Seeeera... Cira... Wait. I've got it!.... George."If your name is a bit long, chances are your friends will shorten it in order to save writing time. You can fight it, but it is going to make you sound like a bit of an ass, so you may as well embrace it. Check your name for whatever is the likely shortcut people will adopt.
So yes, keep in mind what people are likely to call you when naming your character :P