According to the beta beat, stronghold level 25 is apparently coming soon, which will enable construction of the Hero Academy. There have been many threads about how this final new building (so far) will cause problems: if someone wants to have an active Alchemy Lab and Hero Academy (please refrain from commenting on how useless/resource-consuming both of these buildings are) along with the Barracks and Hunter’s Lodge, they either have to convert all their forges to the new buildings or sacrifice some iron/food production - neither of which is a very attractive proposal, to put it mildly.
I have another idea: give us another forge by opening up a new building plot for a forge on existing land:
Another way to at least partially solve this quandary would be to make it possible to change between special buildings without a free builder, but that suggestion only earned 5 votes. It also won’t truly solve the space/resource shortage due to the incredibly long creation times required by the Hero Academy and Alchemy Lab.