The sp reward needs to be lowered. As I said, 800+ a kill is ridiculous.
For leve-linking, yes, to promote leve-sharing.

Where the hell do you pull this "casual" bullshit though. GuildLeves last as long as you want them to last. Especially once they make monster grinding useless so everyone will participate in the system and provide more leves to share. The only "cap" is the one where every player in the server has used their leves in a span of 36 hours, and that is not realistic.

Two systems that share the same usage doesn't work. Sorry. One has to go, and it is not the one with the objectives to work towards to (mandatory).