I think that we (our group) would not participate in your tournament

You make warzone a melee game and some corporations become handicapped (Bauhaus, Cybertronic, Tribes of Earth)
Shooting requires LD test... well it might work in UWZ (stats of armies are balanced) but what about Cybertronic AIs?
You force every model capable wielding a heavy weapon to be equipped with Nimrod or Headbutts.
What about vehicles (especially flying ones)? They can also attack once?
Tough Dark Legion individuals (5-6 actions) with azogar (no point wasting points on ranged weapons) rule on tha batttlefield.
I changed my mind... I would gladly play with you if I could... to make you revise your rules. My armies would be like:
- only Wheel Templars of Ilian + Karak (for fluff)
- only Mirrormen followed by Eradicators with Gigadeath Chainrippers and Flamers
- only squads of Vakyries with Laura + Executioners
- only Banshies - High LD for spotting and safe airstrikes cause you have no weapon to shoot down the helicopter (30 inches)
- only swarms of Ashigaru and Samurais
- only Wolfbane Berserkers - their standards allow fielding army worth 3000 against 2000 (approximately)
If you think that rebalancing every weapon in 1st edition (adjusting costs, ranges, maybe damage etc.) is worth your time - I am really proud of you. But do it carefully.
I have a suggestion for you - switch to UWZ (I don't recommend 2nd edition) - it is much closer to your vision for warzone.