Thanks!

Good point about Aid and Death Ward, but i agree, I think the level that they recharge on a short rest at prevents them from getting ridiculous.

As for level you cast for free at, I definitely think of this as “the lowest level” available. That does provide an incentive to prep only the higher level Blessings as the levels accumulate, but the benefits of the low level cleric spells (bane, bless, having a healing ability) I hope prevent the high level Blessings from just being an auto-pick.

To my way of playing I think Bane would be very popular with this sub-class at all levels, in order to combo with Stunning Strike off of your bonus action attack on the same turn you cast Bane. Similarly with Bestow Curse at higher levels.