My business problem I'm trying to solve is that I always get a few pesky emails about missing promo codes after a sale ends... always. They take 10 minutes to fix and cost me an additional 3% on the refund transaction.

I'm testing showing available promotions online so they can just pick and apply it. But when I got Session Promotion Promo Codes and Price List Promo Codes confused, I thought maybe they should be tied together after all. It seems to me that it would be a good option if you could ideally pick from a list of price list promo item types to associated with a new Session Promotion to easily tie the two together (though I get you track sales with Session Promotions and wouldn't want to miss reporting those who don't use the code). For me, I'd at least like to make the Promo Code for the Session Promotion and the Promo Code in the price list match, and if someone is ordering from the Session that is part of the Session Promotion, I'd like fo the Session Promo / Price List Promo (they're the same code now) to be automatically applied in the cart to save the trouble on client end (and lessen likelihood I'll get an email about it).

Maybe it's even just a pricelist thing? As in your promo code you create in a price list would have the option to associate it with a Session Promotion.