For me, Grand Master's Chapel gives me a way to dump faith while also getting units into key places on the map. Even during peacetime, GMC helps with finalizing armies and armadas, which is useful in preparation of war and for maintaining defense against stray barbs. I'd rather spend gold on buildings, and hard building units is generally not ideal, so GMC takes care of unit deployment very effectively. Sadly can't faith-buy air units with GMC, hohoho.
So yes, I guess the GMC does spoil unit production. Instead of nerfing the GMC though, I'd rather the military infrastructure have a bigger role. Effects that boost production for unit types should have an equivalent (or close equivalent) discount on faith and gold for said unit type, for example.
As a bit of a tangent, I'll admit I've built the Intelligence Agency more often than I've built the Foreign Ministry at this point, but I've pretty much always regret building the IA. I usually only build the FM if I'm playing as Hungary, but that's likely to start changing with the IA on the downturn.
So yes, I guess the GMC does spoil unit production. Instead of nerfing the GMC though, I'd rather the military infrastructure have a bigger role. Effects that boost production for unit types should have an equivalent (or close equivalent) discount on faith and gold for said unit type, for example.
As a bit of a tangent, I'll admit I've built the Intelligence Agency more often than I've built the Foreign Ministry at this point, but I've pretty much always regret building the IA. I usually only build the FM if I'm playing as Hungary, but that's likely to start changing with the IA on the downturn.