Hello. I only recently installed Xposed and today stumbled into this module. Thanks!
Until now, I have been using the very good Textspansion
app for this sort of thing. It works ok but in general your approach sounds much more integrated and useful. However a feature of Textpansion I use all the time are "tokens" These are special text items place in the replacement text. Textspansion supports date, time, and date/time tokens. So a token %tttt placed in the replacement text gets expanded to something like "January 10, 2012 9:19PM" there are many variations on that theme. Obviously, this could go much further and include tokens of many sorts. And this is one limitation of Textspansion.
I do not see any ready reference to guide me if your module supports this sort of thing. If so, can you please point me at some documentation?