From a gameplay perspective I would want to see Andaenism stay, as it's kinda unique in its bonuses (to science). Also, I have issues with the arguemnt that seems to have at least been implied that:
1) Religions that are not favorites of some civ should not be present; and
2) Religions that only appear later in the game cannot be civ favorites because said civ would already have chosen an earlier one
Combining these two means there should be no later game religions. This is (a) historically innaccuarte (e.g. - Mormonism); and (b) removes some key gameplay factors (tech race to religions that occur at widely distributed parts of the tech tree). I personally don't much care about (a), but I very much do about (b). Other people will have the opposite preference I know, but either way I don't buy the logic.