SE needs to redo the leve difficulty, the whole zerg mentality needs to go. Make the mobs require people to use their jobs and do regiments and stuff to get the 700+sp a kill. Make it where a 3 star leve that 8 ppl kill the mobs in 10secs gives like 60sp a kill. Could be a simple as not GIMPING the mobs Hp in leves... it is sorta stupid a mob at level 40 outside leves has 3-5fold the sp as a leve mob.

Battles are boring because all it is in leves is 2-8 ppl soloing the same mob, a good battle system needs to require group coordination.

Overall my suggestion is increase the time it takes to kill something, make them harder, and increase the SP per kill to balance for the increased time it takes to kill. Groups that take the time to work together will kill faster and in turn be rewarded more SP/HR. Rewarding sp for skill instead of just being a mindless zerg.