Warlock's Drain Soul glowing button option currently works for everyone. More often than not, only Affliction warlocks would want it. But some non-Affliction warlocks may like it to, when farming shards for example.

It would be nice to have a sub-option to active the Drain Soul glowing button only for Affliction or for all specializations.

Will be implemented as glowing button variant for Specializations. See #125.