somewhat unrelated question with Hindu - now that you can't cheese the Sikh missionary decisions as easily (I don't even know whether intra-Dharmic conversions remove decisions now like Christian conversions do), do you find you need religious ideas to convert stuff? Alternative is releasing heathen provinces as vassals, but I can't recall off-hand which countries in India take religious early, besides Vijay which is not useful for Hindu conversion (vassals won't have accepted culture problem but overcoming Sunni malus is still a pain without religious).
You keep Hindu decisions as Sikh for sure (I just stayed Sikh as Mewat, kind of disappointing really as the Guru bonuses range from amazing stuff like -2 unrest and 2% missionary strength to...10% stab cost). I haven't tried switching back in 1.8. I think they just yanked the egregious ones like anti-Christian edict boosting missionary strength as Christian and the anti-Catholic or reformation ones working post-conversion.
The only other nation I know offhand takes religious early is Sind, and though Tibet isn't technically Indian it's close enough to be usable for conquests to the East. When I went Sikh I could convert anything I needed w/o religious (5% from decisions pretty fast), but I went religious anyway because it gives you 0 DIP cost vassal feeding in addition to faster/more conversions and good events, even a shot at an early republic by luck via revolutionaries. As Mewat I then spam conquered and cored to feed vassals, when I looked up I had over 200 provinces and well over 300 tax just before 1600 and ADM 4 DIP 9 still lol (with the amusing situation of next military tech being ahead of years, so I could paste anybody nearby). I supported animist zealots in Kilwa and used the rebel CB to attack them, giving me a western border around 1590 when Spain colonized Inhambane. Owning almost the entire Zanzibar node is pretty lucrative due to node location + 5 gold provinces + 2 CoT. Collecting there is actually better than steering anywhere else for now. At least when I finish westernization an ADM tech is going to cost 70ish ADM for a while ^_^. 75% neighbor bonus + 14% idea group discount, I'll be ADM 13 for tier 2 government and diplomatic/quantity/influence pretty fast, should be able to DIP focus those out and still get to DIP 22 for imperialism/client states not TOO long after 1690.
I find it funny that Islam and Christianity are even separate groups, they are both Abrahamic ffs.
If they didn't have separate groups, you'd see craziness like Ottoman-English royal marriages and Hapsburg Tunis on a regular basis ^_^.
people forget that religious rebels ONLY spawn in provinces of YOUR culture group, usually on provinces you are trying to convert.
Japanese is not in Ainu's culture group, and yet I got Shinto zealots and converted, so this is clearly not true. I have also had Catholic zealots in my revolt screen (and spawned them) on seizing a Catholic Spanish colony and converting it to Shinto, and Castile and Ainu DEFINITELY don't share a culture group.