Wonders and factories should be rebuildable, but without losing their tactical value.
For example:
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You must have enough influence in the region, which translates to controlling the majority of the TPs.
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It must take time to rebuild, and you can only rebuild one at a time. Between 5 and 10 minutes each.
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A high cost. 4000 of each resources.
Here I explain how it could work: [Poll] 🏭 Would you like to be able to restore important buildings lost in the imperial age? (factories and wonders only if you "deserve" it) ⛩