I think there should be a guild title as well as the Balenor's #1 Guild Master Title
Since after all,

It Takes A Team



The new title could be called "It Takes A Team"
Since the Balenor's #1 Guild Master Title gives +125 PDEF/MDEF
The Guild Title could give +50 MATK/PATK
and give a passive bonus if you run Multiplayer dungeons and other runs with fellow Guild Members.