Ritual sacrifice feels very meh/undercooked.

It sounds really cool in concept but the reality is its only a handful of modifiers that are really strong and useful for your build, some are just extra damage while others are irrelevant. Or an outright detriment (Cough shroudwalker)

I like the idea but as it stands, I pretty much just try to keep rare corpses alive to use for extra events like rituals/breach/bosses, or if its a rare only map just sacrifice it immediately for the tiny boosts unless its shroudwalker since i dont want to die by teleporting in the middle of a pack.

The option to use it by sacrificing your blood is utterly worthless though, unless you try to do degenerate things like trying to proc the perfect affix before a boss which can take 20 minutes, that would be silly but some people would unironically go there.

Chances of getting a decent affix are very low, you also have no idea what the affix is unless it has a visual element, I aint wasting an ascendancy point on that, i chose to get some extra charm charges gain.

An idea that would make it very strong is to either have it proc a selected affix though that would likely make it very op, or let us store the affixes from the rare we sacrificed to use at our time of choosing