Is your feature request related to a problem? Please describe.

Text on auras with short instructions on what to do about an ability are cool
What would be nicer is for authors to use text replacement, translated to user's locale, without the need to worry about that stuff

Describe the solution you'd like

BigWigs have a list of generic keywords they use in various modules
https://github.com/BigWigsMods/BigWigs/blob/master/Core/Locales/common.enUS.lua#L98

I guess best solution would be to have that handled in a lib shared between addons
Not sure how the information should be shown in wa'ui

The big wigs list doesn't seem that good as a starting point. Seems like e.g. Causese's vocabulary is actually a much better starting point.

I'm not sure I would want to share the text replacement namespace with that though. That is, I don't think the syntax should start with a %. Also from a technical stand point, these should be replaced once at "Add" time and not every time we run e.g. the text replacement code.