Third base base quickly found (Legendary) and all have only two blocks of rock. It smells a quick fix to avoid empty hole that can’t be used.
But if you ask me, currently it’s a fine design feature, this part needs more design thinking an tuning. Currently the Synedrion energy research break any meaning of choice related to energy management. And even without it, the number of base tend break all choices related to energy. It remains only some thought and choices about some elements with local effects, and some choice and elements and protecting base from attacks.