Stealing an idea from PS1 for construction

Nobody wants to attack HIVEs because player bases are way too defensible.

So, make ANTs have to frequently go back and forth from the warpgate to refuel HIVEs. Instead of refining cortium, make HIVEs refine Warpgatium [working name] that you can only pick up at the warpgate.

This way, if you wanted to keep them from locking continents, you could kill the ANTs between them and the warpgate instead.

ANTs worked like that in PS1, you'd fill them up at the warpgate, but you'd refuel regular bases instead of construction bases. AFAIK, the biggest part about driving ANTs in PS1 was getting there alive.

Wouldn't magically fix construction but it would probably help. Thoughts? Tweaks?