Maybe op is referring to
B871398 2 on Hourglass v0.3On this map the metal features are especially tiny and impossible to see during deployment when zoomed out, I never would have noticed if not for replay vision of Dregs sucking them up with Wasps. There's thousands of metal out there in scattered clusters. Even after game starts and a con is selected to highlight, some of the metal features disappear when zoomed all the way out.
Whatever you think of the mechanic, the execution of these rocks is bad.
Reclaimable metal features don't have consistent visuals across maps beyond the "flashes when a con is selected". If this is going to be part of ZK, having some prefabs with consistent visuals would make it a lot more obvious what's going on (think green tiberium field or clump of blue minerals). Otherwise this map probably works fine if the metal features are scaled up or just deleted for now.