I finally got around testing Plegia. Before I talk about the mod itself I should mention that it didnt unpack itself for me either. I also have only tried the BNW version.
Grimas Truth: This ability looks interesting on paper since is seems to be pretty effective and fast way of spreading players religion while saving faith. Unfortunately it seems to be bugged right now: when I captured enemy cities they didnt convert to my religion. I also tried it with other mods disabled to prevent any kind of conflicts, but this didnt solve the problem.
Dark Mage: I was pleasantly surprised by this unit. Moving it to Theology really speeds up the construction of this unit and allows player to go on offence that much faster. Giving this unit increased ranged attack strength but making its defense weak also emphasizes the need to protect it with melee units.
However, right now this unit is pretty much inferior to regular Crossbow in 1vs1 combat since it gets badly outdamaged thanks to its low defense, even if it gets the first strike. You could perhaps consider giving this unit free Cover promotion since player cant really protect his Dark Mages against his opponents ranged units. With enemy melee units the lowered defense works well since player can protect Dark Mage against them.
Right now this unit heals only 25 HP when it kills an enemy, unlike 50 like the unit description states.
I also am little puzzled why you made this unit upgrade into Rifleman. This seems unnecessary alteration since now this units role completely changes when it is upgraded. All ranged damage increasing promotions are also made useless since this unit changes types when upgraded.
Dragons Table: The extra faith from this building is pretty nice bonus for middle and late game. It really cant help player to find religion since it comes too late for that, but the extra faith is really useful later when buying religious buildings and units. Also, since player wants to build this UB in every city anyway, it combos really well with +2
from Temples-belief.
The extra food this building provides, however, is pretty unnoticeable since faith is normally spend pretty fast, unless player is saving his faith for Great People later in the game. It is, nonetheless, a nice bonus on an even otherwise strong building.
Conclusion: UA is interesting but bugged. UU is strong but needs some help with enemy ranged units and has strange upgrade line. UB has pretty strong mid-to-late game boost.
Overall, good job
. Hopefully you are able to fix the UA.