cmon guys, go do the survey dota2/steam requires you to do. as of what i was informed SEA regions gets invitation darn faster compared to other regions. I personally have 2 invitations sent by steam already, and the second one took me about 1 week of waiting period to get after i did the survey (i got the first one around a year before the second one). Just be patient, imho SEA regions gets invitations very very quickly, but well it depends on your patience as well.