This sounds good.

If you have multiple chars sharing the same directory (all my alts share a directory), this could be a problem.

However, I guess you could just name the sequences
Toon1HealingWave
Toon2HealingWave
Toon3HealingWave
Toon4HealingWave
Toon5HealingWave

No more work than a macro I guess (other than the naming).