I want to suggest re-working the "class / level" columns.
I've re-written them so it's possible to sort by class and see what's available, then filter by source / edition / etc. to narrow down your list for any particular game.
If you have a different way, that's cool, but the way that the old sheet does it is awful. Searching for domain / class powers is a complex query, which is probably why nobody ever asked "show me all powers in the Death mantle" and saw the obvious gaps.