As title states, would you find it worthwhile getting tavern Kenpachi if one already has Zabimaru Renji?
The damage tradeoff seems a bit questionable. Zaraki has slightly better str growth, and adds block to saulters; which would certainly raise overall dmg output over Zabi Renji for events.
One of the deciding factors is also, how decent are Zaraki's mods?
kenny's mods are atk+8% hp+8% hit rate+10% damage rate+8% and immune to forbidden skills.
kenpatchi out scales renji hard so its not a questionable question. Kenpatchi is far better then renji ever will be considering renji can only use purple treasure while kenpatchi can use gold this is a huge factor not to mention a major bonus amount of stats on top of their basic stats.
A plus I just though about for tav Zaraki is also, will be easier to mod him since Zabi Renji is S+ ranked so his mod fights are harder to clear. (I'm lv 87 right now)