I’m working on upgrading my faction’s HQ from lv7 to 8. (Next planned upgrade)

In the Quartermaster bldg, there is an upgrade to reduce HQ construction cost.

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The resources to upgrade seem kind of steep. Is there a payback or ROI for doing it?

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What I’m trying to figure out: is it worth it? Is there a better sequence for the upgrades?

My current focus is getting my production buildings maxed so I don’t need to jump to produce resources.

Any advice is greatly appreciated. Thanks in advance.