I agree that it is not the more intersting war to put to MTW. Massed lines of infantry with again masses of artillery sitting there. I don't think that the game engine would sufficiently show the speed of the battles (not hours, but days to weeks), as the most improtant factor for the attrittion was the ability to move up reinforcements to defend faster than those able to attack. Then managing ot implement the defences would be hard, as would modifying the terrain - after all attacking should be nigh on suicide, with massive odds required to take any ground at all - in one battle 8 german divisions held off 18 British ones - and caused mass casualties to boot. And the element that it was merely a case of thinking "the more men we throw at them, we're bound to get through, any day now... the next 50,000 will do it..."
And the fact that the war ended due to economic strangulation by the British Navy does not really add to the fun.
The last mass modern war was the American Civil War (I am sure that there are loads of other wars that were fought - colonial wars for example - but these tended to be one sided slaughters).
All that effort for some tanks to break down on the battlefield seems a bit of a waste.
And if one is to go the war, one has to include gas. Immoral? Perhaps, but so what?? It happened, and one should not edit history to make it more palettable for today (something that we tend to do today - especially America). So, bring on the gas Bring on the slaughter Let's recreate the biggest mud wrestling fight in history with a bring-your-own-gun policy.