If Official Release is gonna be anything like the CB of K/J/C Latale, I'll cry. (There was a video on youtube showing the FRIGGEN HUUUUUUGE amounts of people) In any case, it'll be at least as populated as the OBT MINIMUM. So.....either level ridiculously slow, or ridiculously fast to avoid the crowd. If you don't, have fun trying to quest or grind.
They might have an EAST and WEST server. I wouldn't count on OGP releasing another server though, but if they do, I feel they'll underestimate how many players there will be...*Looks at Rohan's official release; Server crashes within 5 minutes of launch.* Right.
Yes, a lot of people need to learn about killtime:EXP gain ratios/efficiency, and downtime while grinding.