Yes, the spell related ones are tied to Domain spells, though I might also add one or two like the Arcana Divine I posted above, which give new spells as well.
I was mostly throwing around ideas. I thought of giving the Cleric something like the pact boons, as I mentioned in the "Extra layer of customization" bullet in my first post, but have decided that their free choice of the spell list does plenty for them, and I don't want them too similar to Warlock. That said, an invocation giving extra attack would not be out of the bounds at all.
I was a bit iffy about burning Brilliance anyway, I just wanted something that would reflect each domain, and immediately read like it was from that domain.
I am not too worried about removing the need for hit dice on short rests, people will still need to long rest eventually to regain spells. I was mostly worried about how it might play in combat, but figure that everyone clustering around the cleric for 3 hp per round will make a good target for AoE, so people will not be too encouraged to pile together. You might get a Pally/Cleric/Tank(Fighter or Barb) team that sticks together, but that is just tactics.
Most importantly, Interesting was what I was aiming for. Glad I hit that mark. Now I just need enough that these don't become the default picks for players, and they can still have characters that are interesting in a different way.
