Static NPCs were a bit of a problem, but the writing made the NPCs feel like something other than a Quest Dispensing robot trodding the same path for eternity waiting for someone to pass close enough that they could spit out the same little bit of dialogue and pray that the recipient of said dialogue would begin their quest.
Go to dungeon, kill all the goobers, discover that there is a convenient exit at end of said dungeon that drops me off back at the entrance. Fantastic.
Plus even if you say "generic D&D" someone can pretty quickly counter with "generic fantasy" and "generic Conan" for Oblivion and Skyrim.
That's all I'll say though, not the topic here.
Regarding Christianity in Fallout, it's always been around albeit not in as front and center a position as it was in Fallout 3. I was pretty surprised when they had straight up Bible quotes in the Main Questline.
I hope to see a new fictional esoteric religion in the next ES game, assuming the next ES game is set in a non-human land or perhaps Hammerfell. Explore a little bit deeper what orcs, khajit, argonians, all the elves, and the Redguards believe about the world they live in.