At this point SE should either:
A. Start all jobs with whatever stacks / buffs they could generate given enough time... i.e. SCH starts with full Aetherflow.
B. Give everyone in raids / trails a debuff that prevents ability use until combat starts.

Because honestly this 'middle ground' where some jobs have pre-pull, some don't, and some have been made outright clunky for sake of preventing pre-pull (e.g. SCH) is just a terrible ‘solution’ for everyone.