I find this mod to have a lot of potential especially once missions are fleshed out however I have some suggestions for some mechanics that be interesting mainly how the protestant reformation can work
- For the Catholics you can have there be a rival pope that contests the papacy in New Jersey and that leads to a League system forming for which papacy you support
- For the Protestants I feel like you can have their version of league by having it divided by reformists/liberals vs traditional/conservatives with religions like Unitarian Universalists, and Mainstream Protestant, Fundamentalists, and Evangelical rising up with centers of reformation to reflect this.
- You can also have minority Christian groups like Orthodox, Quakers, and Amish to prop up along with Judaism and Islam popping up to reflect prominent minorities. I also would add New Age as a faith given its influence amongst certain people in the modern day.
- I would add a way to represent religious minorities to show the diversity of the US along with it working better personally with conversions. I also would add a way to have your state religion be secular which would be accepting of heretics (religions you tolerate) though not necessarily heathens with options to accept or denounce religions.

Some other miscellaneous things would be
- Alaska islands shouldn't be one province but maybe split up a bit more.
- Hawaii-Alaskan naval connection could be interesting
- Adding the US territories (Puerto Rico, Guam, Virgin Islands, Samoa etc)
- Adding more extensive and nation unique Disasters to reduce blobbing on some powerful countries