It's great to be able to customise where and how the toasts pop up, but there's one thing I'm missing in the settings UI:
A way to differentiate which toast types were included in the default, base UI toast system and which toast types are exclusive to the addon.

This would help with determining what I (or any user) would want to toggle to get rid of something the original toast system did, and what to toggle to add what was previously not even included.

I think almost all of my toast systems have a counterpart in the default UI at this point. Like, at some point in the past only my addon had tmog toasts, but Blizz added them later.

The only exception is actually Loot (Common), it's the only system that's driven by parsing chat events, kinda similar to how xloot and whatnot work.

-- edit

Just to clarify a few things. For instance, on my end I split garrison toasts into 4 systems for each xpack, at least in the settings UI. In the default UI currency and special toasts are the same system, but I split it into two because I wanted to expand the currency part to cover all currencies and not just those that pop up as rewards or whatever.

Thanks chief o7