Actually, I usually find Theocracy a better government than Merchant Republic. Even if not playing for RV, I like to buy units with faith.
Bermuda Triangle - when I've seen it, it's been too far offshore to be useful, and invariably send you to a hex surrounded by ice.
Music - with almost any game, the first thing I do is disable the music. If I'm playing a game, I don't want to be distracted, and if I'm listening to music I don't want to be distracted.
Most games for me, I find there's enough that I want to do with faith (be it religious units, military units, great people, etc..) that the buying bonus on Theocracy is definitely better than the limited gold bonus from Merchant Republic. I never quite know how to value MR's district bonus, but also since some of the expansions a year or two ago, it's really not a problem to run a couple military slots either, so I find the card breakdown between those two to really not be a problem.
I certainly expect that Monarchy will be the biggest winner in the re-work. Even simply moving one of their military slots to a diplo slot would synergize better with the envoy bonus they get, and I could see them arguably gaining another bonus - maybe something like +1 amenity in cities with a governor? I would also really like to see them boost the legacy options for all 3 of those governments. I guess Theocracy's legacy is fine if you're going religion, but honestly I'm not sure if I would ever bother running the Merchant Republic Legacy card. It's weird that the T1 legacy cards are basically miles better than the T2 legacy options.