Apocalypse is just not my thing. Enforced and random disasters turning inevitably endgame into sudden death - not for me. Soothsayers (now even releasing CO2?) and farming disasters for extra yields or to damage opponents feels off as well. Maybe I will motivate me one day, if I look for a really crazy game - but that day has still to come.
Secret Societies will see an occasional return into my games, if balance (as others mentioned for example, early governor title inflation), mechanics (e.g. Cultists operating religious layer, not simplay always yielding relics) and bugs (like HO and Owls special buildings behaving weird with Arabia/Ottomans UBs) should be adressed at some point. Without further changes, as exciting as the idea behind this mode is, I feel sadly that it ruins more than it brings for the average game. I really like the extra source for conflict, but the overall injecting too much "free stuff" (not only gov titles, but also yields) just kills one of the thriving factor of a strategy game: Constant careful managment of scarce ressources.
Tech Shuffle So far the best mode for me. Some bugs have to fixed, but apart from that is a solid addition. I'm still exploring the impact on gameplay, but so far I really like it
Probably won't activate it in
every future game, but I see myself using that on a regular base.
Dramatic Ages No final judgement until I have played with it, but I fear that it will fall in the same category as secret societies. Nice ideas (e.g. no points wasted, dark ages more threatening), but breaking too much (no more normal ages as middle ground, will the standard policy cards be still competitive?, Georgia getting super-buffed here, but not improved with the mode out)