I would design a host of other Roman themed weapons and dungeons, it is high time we fight the titans.
Columns everywhere...
A few harpy here and there
Re use golemn in different colors and textures as elemental golemns
Make sure to have a barbarian invasion level
Reuse galyxzz staff (with more sparklessssss) as a Jupiter staff (roman, not Greek people)
The new shock lance: Jupiter lance
Make a void bow very sparkly for a Jupiter longbow. That or a crossbow
Why have all 3 stat items start with Jupiter? New plan: Jupiter is a power driven item set, crit and extra damage.
Neptune items defense: more armor and dodge

Yes, I really did just give you a roadmap.