I just wanted to say what Chadmann said about map specifics is a great point. This is something players up to grandmasters even won't notice little things on a map such as on MLG tda i believ it is that has the low ground between the main and the 3rd so reapers and blink stalkers can go into the main another way.
Correct me if I am wrong, but I believe that little ramp thing is removed from the Blizzard Version of TDA
Even the smallest donations help keep sc2sea running! All donations go towards helping our site run including our monthly server hosting fees and sc2sea sponsored community tournaments we host. Find out more here.