A better macro for a few classes is one that fills the appropriate slot when level synced, instead of macroing all of the different variations. Example: Stone, Stone II, Stone III.
If your Stone III is on hotbar 1 on slot 1. If on PC type hotbar instead of chotbar.
/chotbar action Stone 1 1
/chotbar action "Stone II" 1 1
/chotbar action "Stone III" 1 1
A Scholars Ruin and Broil, a Black Mages Thunder II and Thunder III, an Astrologians Malefic and Malefic II are some examples of where else this is applicable.
The /chotbar command has many uses. It even helped me easily switch Stoneskin and Blizzard II in my cross class and place it on my bar. 
/Macrolock
/echo You are switching your cross class skills. The following skill will be disabled:
/recast "Stoneskin"
/recast "Blizzard II"
/aaction "Blizzard II"
/aaction "Stoneskin"
/aaction "Blizzard II" on
/chotbar action "Stoneskin" 1 1
/chotbar action "Blizzard II" 1 1
/echo Your current cross class has been changed to the following:
/recast "Stoneskin"
/recast "Blizzard II"