I feel like there needs to be a way to 'raze' buildings while in queue that can't be abused.
For instance, I derped today during my pump, razed buildings to convert to Armouries. Put 250 buildings into TG instead on accident, so now I wait 8 hours for buildings I don't need then have to raze and rebuild.
Yes, it was my mistake, but I feel like there could be a mechanic, that if you put buildings into the queue, you can switch them around during the same hour you put them into queue (at a cost, or however you want to do it). After the initial utopian hour, the queue will go forward as normal, but that gives you at least some amount of time for putting the wrong building into queue.
Just a thought!