[unknown] I haven't checked the enchanter side, but I personally would be totally fine with one of these scenarios:
A) Bard is best luller with the second best charm (Enchanter first charm).
B) Bard is the best charmer with the second best lull (Enchanter first lull).
With Cha main stat scenario B feels more appropriate, but it's not like A sucks. I would be happy either way, as long as I'm not required to twist.
The purger aspect was an entirely unexpected but most appreciated bonus.