If the Talisman were removed, and no other "goodies" put in it's place, I would call Religious only a 1000-cost trait at best.
Here's a thought for reqorking Religious, as it appears in stock SE4:
No Talisman.
Additional levels of the Shrines (4 to 6), allowing up to 2x the effect, for proportionately increasing costs. As it is, the War shrine is made pointless by the Talisman, and the Time shrine is only half as good as the System Robotoid.
Add in planet-only Versions of the shrines, as appropriate; perhaps call the Planetary ones "Shrines" and the System-wide Versions "Temples" ... ? Thus, the Religious player could forgo the entire Robotoid/System Robotoid line of research,a nd use Shrines and Temples of the
Time variety.
Add religious-based training facilities -- with a slightly higher cap, say 25%.
That, to me, would be worth most or all of 1500 racial points. However, note that there would then be NO ship-based components at all.