I want WW1 tanks and HiTech would have to change the WW1 dogfight arena to WW1 arena.
With that said, here are 2 tanks I want IF we get it changed to just "Arena"
Mark IV Tank :
Armour 0.25– 0.47 inches (6.1–12 mm)
Main
armament Male: Two 6 pdr 6 cwt QF with 332 rounds
Female: five .303 Lewis guns
Secondary
armament Male: Three .303 in Lewis guns
Engine Daimler, 6-cylinder in-line
105 bhp at 1,000 rpm
Transmission Primary: 2 Forward, 1 Reverse
Secondary - 2 speed
Fuel capacity 70 Imperial gallons
Operational
range 35 mi (56 km)
Speed 4 mph (6.4 km/h

And for a competiton the A7V Sturmwagon:
Armor side 20 mm, front 30 mm
Main
armament 57 mm gun
Secondary
armament 6 × 7.9 mm machine guns
Engine 2 × Daimler 4-cylinder
200 hp (149 kW)
Power/weight 6.5 hp/tonne
Suspension Holt track, vertical springs
Operational
range 30–80 km (20–50 miles)
Speed 15 km/h (9 mph)

And for the Mark IV let their be a main gun selection between the 5 Lewis .303's(Female) and the x2 QF-6pdr cannon(male)