Here is an outline I belive would make the religions much more active and important in CE gameplay.
Equality, fill in the blanks of the non beta religions, for instance Relic hunters call out battle crys to Set or Defari mention Yog upon death. Most of the other religions dont have this nor do they have emotes to thier religious customs. For example a worship emote that does an animalist howl for Sag. As well add in a few GODDESS religions, such as Ishtar, Kali, and Wiccana.
Balance. Each religion should offer similar things but within the restriction of that religions customs. As a guideline for this balance ALL religions should have:
A. A healing/vitality item.
B. A combat weapon.
C. In addition to religious attire should have a set of each type of combat armor.
D. A banner/placeable identifying religious claim.
E. An animal skin for specific animal types rendering them into effigies/Demi-Avatars.
CROM would be included but in a different aspec. Croms faithful would have to be found worthy. Said religious recipes would be obtainable only through a series of quests given by Conan himself.
Religion rivalry. NPC aggro would be able to identify player primary religion and aggro if said religion is of a rival to thier own. Example, a Mitra player heads to Sepermarru ALL NPC’s there would aggro where a Set player only the bandits would aggro.
Divine intervention. Much like the purge meter this bar would fill based on the clan’s faith or how often they craft in the shrine of the clan’s primary god. Once filled the clan leader can select a location on them map that spawn a purge of the gods followers to cleanse the area of the heretics. Either that or much like the god bubble it renders all clan assets and members invulnerable for 24hrs.
Primary? As ive mentioned a few times, with religion trainers would be impossible to restrict players to just one religion, and so under Clan Tab the clan leader would have the option to choose the clan’s primary religion. Which would give access to my last point.
Tier 4 shrines. As before you gain access to all previous items. However a T4 shine has a 1 per clan limit and can only be accessed if that god is the clans chosen primary. T4 shrines would give access to the Divine intervention bar and the religious combat gear previously mentioned. It would also allow clans to declare a religion war onto a clan with an opposing T4 shrine.
Not exactly sure how balanced this system would be or if it would prevent exploitation as intended, but perhaps an excellent Modder could find a way to implement and test this theory?