Stances specifically is possible, you can bind keys directly to macros using a mod (I forget the name offhand) or to a hotbar slot containing a macro. The macro would look something like
#showtooltip [stance:1]Mangle (Bear); [stance:3]Mangle (Cat); Healing Touch
/cast [stance:1]Mangle (Bear); [stance:3]Mangle (Cat); Healing Touch