First, nice mod. Second, some UHV are just too hard now.
One example is India. In the regular RFC, you had to found judaism, buddhism, hindhuism, christianity and Islam to get the 5 religions.
Now you need to beeline to priesthood to get buddhism some turns before Babylon's spawn (because Babylon starts with priesthood and meditation and will automatically found buddhism). In several games I played, only once buddhism was an Indian religion. The most common religious landscape in the world is a major buddhist bloc ruled by the apostolitic palace, isolated hindhu India and Confucean eastern civs and almost always no christian or jewish holy cities.
The Beeline forces India to skip judaism ; and the atrocious tech penalty which ends in 600AD is awful enough to skip islam too. I managed (monarch difficulty) to get divine right by bulbing between 600AD and arabia's spawn but that implied to not expand for a while keeping Dehli busy with forced priests (4/5 to be sure to have at least 4 priests) and with the inevitable inability to found Tashkashila or Lahore because Dehli needed the extra food from the wheat and the sugar, you lose precious turns of settler/worker production for further expansion for the last UHV.
Now you need to steal the two Chinese religions. That's doable but only if you start from Tashkashila or Lahore, pray for the Persian to stay peaceful (thanks for having given them extra units) and be really lucky not to get a great scientist first as you need to build an early library to run 2 scientists to get calendar on time after oracling maths, and schedule your first great person to be a priest while you waste research to monotheism to bulb part of theology. The main trouble is that the first tile you'll improve is the sugar (marble quarry excepted) relying on eventual trades to get a least the worker techs (Maths, calendar and theology are usually enough to get also iron working). You'll get your golden age at a time your land is unimproved, but you'll have plenty of time to play a builder game, in a perfect world but...
...Finally comes the plague. It ALWAYS strikes my land and ALWAYS all my cities are reduced to one pop cities! Granaries and Aqueduc are always priorities when I play India. When the plague occurs I ALWAYS have lot of health excedents, but it appears almost ALWAYS in my lands, never spread to the open bordered - road linked Persia, and if so, it last longer in my cities, and then, I almost ALWAYS lose the third UHV.
a hard India is a good thing, but some help would be nice. For example, reducing the plague total devastation, increasing the odds to get the health event or add some health ressources in the Mumbaï area, like a crab or a clam and later a corn, giving an access to Tibet (Do you know Katmandou?), reducing or delaying a bit the spawn of war elephants