I’ve finished my initial review of The Armorer’s Handbook: Equipment Upgrade and Rune Magic System for 5E. To put it mildly: It seems like it’s a good fit for our current campaign. We’ll have to see how the introduction of Runesmiths affects the overall game balance, but I’m not really thinking that this is much more powerful than comparable magic in 5e’s RAW.
Effective immediately, let’s all consider these rules live for the campaign. As usual, we can make changes in the future, as needed.
I’ve printed out a copy of this supplement, so we’ll have a new binder on hand during future gaming sessions.