I agree with that idea. For a test run, I propose we try it at the new industrial centre. People that work on baking or smelting should get yeomanry and move their hearthfire into the firewall. Place a claim around your hearth, to ensure that anyone who tries to burn around it takes some damage. The firewall is still thin at the east side, so burn a hole there when you're ready to move your hearth. Important: have at least one bay12 witness when you do it. Any hearths without witnesses will be considered hostile and walled in.
So, that means that the main gates will only be needed for hearth access and access to equipment which will be stored in the new stockpile (yet to be plotted). With this reduces demand on gate access, I think we can divide the gates by professions. So, the southeast gate would be the miner's gate, and they would pass that claim only to each other. North will be baker's gate, and that leaves two gates on which to decide function. I think the western gate should be general access gate and be passed on to any bay12-er. This should somewhat simplify finding the gatekeeper for a gate you want to cross. And people, please don't bother gatekeepers unless you really have some business inside.
In other news, I've plotted out some ovens and metalworks. If you want to, feel free to finish building them, but please don't start any new. I have a plan here, and I'd appreciate it if you let me do all the laying out of buildings.
Also, harvesters, don't bother picking up straw. It just results in a lot of pointless walking because we have more straw than we need. And make sure to replant. I've found it that the fastest way to harvest is to click on harvest, then select a seed in your inventory and right click to replant as soon as harvesting is complete. This way you don't need to walk the same tiles twice to replant, and you can get a full inventory of seeds because when you select a seed for planting it immediately frees that inventory slot.