Not sure if this has been mentioned or not but as I was boating around on a server, somebody was on a fellow lake near by and we realized there was no way to boat to the next lake because there are (currently) no streams or rivers or the like connecting bodies of water together. I love the boats and they are a fantastic way to get around! Currently admins of servers and those skilled in terraforming (and who have days to waste away) can create create their own custom lakes and rivers but how realistic will they look? How adventurous will they be?
Anyway, my two cents.