We have many fire and water weapons. All nice but ... there is no much difference. The same with all other bullet or energy weapons. How about adding some side (special) effects to those? ie.: water will drop down to holes making tanks move slower (loss of 5p of fuelskill in flooded area). Flood will gone 1lvl (depth) per turn. While its volume will come out of total damage of bullets which missed. all same with fire but it would not slow down a tank but do dmg to him. let it be ~3 per sec in fire. sniper (sub-sniper) - only weapon which will pass through armor (not-shield... i dont want to mention any effects with shield in this topic). energy weapons - like lighting, twinkle, laser.. will do additional 10% dmg to armor bulet weapons - like shot, masive, 3-ball.. will do 10% less dmg to armor. Not all weapons would have side effect.
Realistically flooding the entire battle field sounds like a very effective and realistic plan, making the game more realistic and encouraging players who enjoy realism to play the game. Realistically, this is possible....
Well, it sounds like you want kChamp to add phyisics to the game, which would take alot of time and might lag up the game.
Who wants physics?! Nobody wants physics in a game...but think about it, why add physics into a game where you are a tank and shoot cats at each other. I think realism is not on the mind of kChamp.
Years ago, my friend had a game just like SSL2 on his Amiga (not online though of course) called Scorched Tanks and that had 'flood' style weapons. Here's a video of it where the player uses a 'Lava' weapon... which acts like lava (runs down the hill and floods the bottom) Skip to 3:27