My Lands: Black Gem Hunting

how about pit 6 and 7's that can grow crystals of one colour for each pit
be good to battle over

I would like to see varied levels of the current outer domains and perhaps the addition of a few more that seem intuitive.

For Stone, Gold, Iron mines I would like to see levels 1-5 (instead of just level 1)

There should also exist the outer domains: Lumber Yard and Plantation which could yield production of wood and crops respectively (and also have varied levels of 1-5)

For a speculative idea there could be neutral Village outer domains that provide population that could be captured or sent to other cities, but not sure if this is necessary.
An extension of this idea would be varied types of village domains that could include something like: Hill Fort, Academy, Cartographer, Magic Tower
(All these having expiration timers of course like any other outer domain)

Hill Fort would be an outer domain that provides it's owner with a training ground for troops with structures depending on the level of the domain. Whether this be for free daily or merely the facilities to initiate training, I think it would add another element to the game. It would be like a camp where no other structures could be built (aside from the pre-generated ones). It could also have natural fortifications an act as a small tactical location.

Academy would be an outer domain that would provide Experience per hour to heroes stationed there based on the outer domain level. It would be like a camp where no other structures could be built.

Cartographer could provide a small bonus (+1-5% explorer speed) and daily chance for small random resources for the owner based on the outer domain level. It would be like a camp where no other structures could be built. Can stack.

Magic Tower could provide visiting heroes with increased mana regeneration and daily chance for scrolls based on the outer domain level. It would be like a camp where no other structures could be built.

I think these structures would add a lot of control points for stronger players to battle over, but also provide more fun and interactive locations for lower players to discover and control.