GST entry idea made me think some. On one hand, it seems like a nice way to ensure only true guilds can participate, and eliminate last minute teams from entering. On the other, it could mean that there are more teams that are able to enter, which can't be allowed due to time constraints.
What could be done is use the ticket entry system and add on the requirement that only the top 32 or 64 in said "NGS points" will participate, and the guilds who purchased the entry ticket that did not qualify get refunded the points.
Just a thought.