[Suggestion] Convert without a builder if either building is maximum level
With Advanced buildings there is no benefit to 4x Forge level 20.
With Barracks, Hunter’s Lodge, Alchemy Lab and Hero Academy, building spaces, and builders, will constantly be shifting in priorities.
If the base building, or the Advanced Building, is at maximum level, allow conversion between the two without a builder.
A Barracks Level 10 could be converted to a base building, or from a base building, without an available builder.
A Forge Level 20 could be converted to an Advanced Building, or back to a Forge Level 20, without a builder.
This would not apply to upgrade, only the free conversion.
Converting a building to an Advanced Mine Level 1, for the first time, would still require a builder and 429k food.
Convert button would change to Free swap button with a green outline. If a free swap was available.