Personally, the issue of investment is not the cost of building, but the 20-40 turns they take. That's a very long time not being able to build anything else, and also a long time of not being able to soak up cash through new buildings.
It began on seven hills - an EB 1.1 Romani AAR with historical house-rules (now ceased)
Heirs to Lysimachos - an EB 1.1 Epeiros-as-Pergamon AAR with semi-historical houserules (now ceased)
Philetairos' Gift - a second EB 1.1 Epeiros-as-Pergamon AAR
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