This is the melee build that synergizes extremely well with my Go-to [Garuda] BloodQueen build. As you can see, i left a slot open for your interpretation. I find there are a few mods that can fit here with no issue. Here are a few examples:
Sacrificial Steel- Crit chance will be 64% at base, with 120% from the Gladiator set and BR combined (the combo is multiplicative).
Primed fury- 55% added atk speed.
Quickening- 40% at speed PLUS 20% combo counter chance.
Amalgam Organ Shatter - 85% crit dmg PLUS heavy attack wind-up speed.
Molten Impact/Volcanic Edge- Either 90% raw heat or 60/60 heat and status chance, pushing your SC to 79.2% at base.
And these were just some ideas off the cuff...imagine what YOU could do. Imagine what you could build in a different way altogether!!!