Bard can slot TP and MP regen .. why take MCH?
Bard can up the critical hit chance of the party ... why take MCH?
Bard can up the direct hit rate of the party ... why take MCH?
Bard can Increase HP and Reduce Vulnerabilities .. why take MCH?
Bards does more over all DPS than MCH with DoT and damage rotation ... Why take MCH?

This is what SE should be asking themselves, other than the die hard fans who like the aesthetic, there is NOTHING a MCH can do that a BRD cant already do, or do better.