Многие их ищут, многим они вовсе не нужны, а многие даже не замечают их, не понимают что они вокруг нас, каждый день, везде.
А эти чудеса порой, сокрыты в обычных, привычных предметах.
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Great ideas, the only BUT is that moving/destroying/creating towns isn't a very good idea.
Added 3 minutes later
Yes, you could also add a new resource - stone - which is mined in quarries. After all, in Heroes, a huge number of buildings are made of stone, but, unfortunately, there is no resource for it.
Why do you think it's bad? It's actually quite good for multiplayer.
Ore includes both iron and stone.
Here's another idea: a moneylender's house – it provides loans at interest for a specific period. If the money is available by the end of the term, it is automatically deducted from the "account." If not, mercenaries will attack some of your mines, units, or cities (or something else). Also, the agreement could be made for a certain artifact (which exists on the map) or a number of creatures.
Another idea: add resource deposits where you can build a mine (like in the fourth game).