Trench Builder game idea

What I'd really like is some sort of trench building simulator, where you're in charge of building an intricate and efficient network of trenches while under constant bombardment. You need to designate and dig communication lines, build artillery dugouts, have firing lines, redundant lines, supply trenches, barracks and sleeping quarters. mining tunnels to put explosives under the enemy trenches.
I started with this idea thinking it would be shit, but now at the end of it it sounds amazing.

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That trench simulator idea though... that could be good. Do it dwarf fortress/prison architect style. Instead of directly controlling the guys, you designate where they should build stuff. In this case, where they should dig trenches. Then you can designate what type of trench it is, then improve it, make it sturdier, make it deeper for more protection.

Meanwhile you'd have infantry and officers coming into your trench network, and they need food and shelter to stay alive, with the officers needing more. The better you build your trenches, the more soldiers it can keep alive, therefore the more soldiers you can send over the top on attack day.

A response by a dude: Reading this, I am reminded of some old flash games: Warfare 1917 and Endless war: defense, along with a couple of WWI games made by the BBC. All have simplistic controls and AI, but they have parts of what you’re talking about. What I want to know is how historical would you go with this. You could have WWI, WWII, or Cold War settings, each changing what you can do with a defensive line, and what threatens your trench network.
For example, if you’re playing WWI Germans, an event would be ‘Battle of the Somme’, the first deployment of tanks by the British, and since many of your troops have not seen a motor vehicle, some objectives might be: get the men’s morale back under control from ‘Tank Terror’, get API rounds to the machine gunners, and have your Howitzer’s moved up to directly fire on the tanks; an optional objective would be capturing ‘relatively’ intact vehicles. A future mission could be a reverse of Amion, with the player finally getting a couple A7Vs, but then having to stop an armored offensive of 15+ enemy tanks with Infantry following. If you captured enemy tanks in the past, you could bolster your forces then. Just brain-storming here. WWII Germans: the enemy has more men and tanks then you do bullets and shells. Additionally, you now have to defend yourself from air attacks. WWII British: Trying not to be outflanked by German Armor. WWII Russians: You don’t have as good troops, so you have to leverage as much as you can from your armor while trying to not get outflanked. How frustrating is that as a player? You smash the enemy’s initial offensive, but they just have the next wave go through your weaker AI neighbors, then surround you, forcing you to try and break out. For some Red Storm Rising/Cold War gone Hot scenario, you’ve got to deal with being massively outnumbered if playing NATO, and facing heavily dug-in forces if playing USSR, all while under Tactical Nuclear bombardment, which I now see you kinda implemented in Tank Hunters Quest.
From a gameplay standpoint, how are you going to handle attacks? Will you be controlling the offensive, or is it simply at the end of X days command orders an offensive. How about enemy attacks? Stopping stormtroop infiltration, counter-sniping, counter-battery fire, and stopping enemy waves are things that would have to be considered. As for what you do in between offensives, you are required to send out patrols to capture prisoners for Intel, while preventing the enemy from doing the same to you.
All in all, that would be an excellent game, particularly it being the 100th anniversary of WWI and all.