...assuming arenas (both 1v1, FFA, and teams) will ever be reintroduced?

What weapons, armors, and shields do you think would be most popular and why? Do you think any counter-loadouts would also be most used?

My personal favorites:

Blackhawk/Senteza

Pros: Fast Fire Rate, High mobility, Uncommon damage type (shadow)
Cons: Comparably weak per-hit, no CC

Faust/Gran Faust
Pros: Curse, Very high damage, Shadow Damage
Cons: Self-Curse on charge, fairly easy to counter or avoid, Slow.

Polaris
Pros: Shock, Good damage, AOE, Knockback
Cons: Elemental Damage, Slow bullets

Shivermist
Pros: Wide AOE freeze
Cons: Very little damage. Freeze break can be sheilded.

Skelly Line
Pros: Shadow Resist, Freeze Resist
Cons: Vulnerability to fire and elemental

Mercutial Line
Pros: Movement Speed Buff, Shock Resist
Cons: Vulnerable to Elemental and shadow damage.

What are your thoughts?