Hi. This is a list of things i want to build around that sounds fun.

Spear and Javelin weapon type. Focus on pierce mechanics. Imaples.

Fan weapon type

Battlemage: new spell types that have base spell damage and animation speed scaling off equipped weapon stats.

2 hander throwing: some way to turn 2 hander bonuses into throwing instead.

Touch Spell imbue toggle: Casts socketed touch spell on melee/projectile attack.

Animate Weapon spell: convert a weapon into an animated weapon summon that somehow scales with your stats and weapon modifiers
(point is to think about your weapon you imbue, adds an interesting item chase angle).

Summons gigajuiced.
New item modifier: Summoned creatures level +X
New item modifier: Creatures you attack aggro your summons
no target ways to give summons your skill modifiers like +trip, +intim, +bluff
no target ways to tp your summons to you without a separate UI
mind-control targets getting your summoner buffs while mind-controlled.

on-equip Weapon swap mechanics

Attribute stacking items and feats that encourage MAD gameplay.