[Squirrelloid]

gem gens were specifically removed because they led to annoying gameplay. Namely, it strongly encouraged turtling *and* it made gem income both invisible and unassailable. Since gems were the real currency of the realm, as it were, this means there was no way to destroy the real economy of the opposition (since they could hide all their units with gem gens under 25 domes in their capital, making them impossible to assail, and generally speaking these would also be hiding scouts, so you couldn't assassinate them). This meant games went on much longer than they should have as no meaningful victories were possible.