Novus weapon upgrade system findings

[Nekodar]

It lists the percent chance for every addition of mostly every materia type. At least the ones people are primarily using. It seems there's no data listed for Piety success %, probably because most people haven't added Piety to their weapons to find out.
Anyway, I hope it helps you out some.

Pretty sure the Piety list is wrong for Thyrus.
Tier I, II and III have 8 steps each with IV being the one that gets 9.
I know because I added a lot of Piety, and had +24 when I could start on Tier IV.

For reference, I'm currently at
+23 Determination
+26 Piety
+16 Spell Speed

I haven't really decided if I should cap Piety or leave it as is. Determination I'm not touching Tier IV due to insane materia prices.