It's definitely on my wish-list, getting tired of just "pushing it around" since flying a nicely tuned AQ is actually fairly boring...
A lot of what I've been doing lately has been geared towards making future additions like this easier (in terms of setting up the controls, for example).
Would a simple ACC on/off mode suffice, or would an "exponential" mode be preferable? By the latter I mean, for example, the further the pitch/roll stick is from center, the less ACC stability is used (this would need to be adjustable somehow to suit the pilot's preferences). The former would be simpler of course, but I wonder how many would actually use it. There are many inexpensive (and simpler) FCs out there, and as pointed out AQ is not generally geared towards such use.
Thanks,
-Max