Kara's the only successful thing DSP has had since SS501. AST'1(boy group) disbanded after a year, Rainbow is still trudging along, but hasn't really achieved any real success.
Ajax hasn't gotten much attention.
Puretty is probably disbanded since some of the members are apparently in this show (Shi Yoon #2 revealed)
DSP is trying to hang onto the one thing they got which actually made them some money and grasping for straws.
DSP has claimed that Puretty hasn't disbanded.
This show is probably just as much a vehicle for the re-vamp version of Puretty as it is for KARA 3.0