Solo-managing multiple brands is where AI either saves you or drowns you in generic. By your questions:
Q1 (brand-consistent posts): ChatGPT's wrong here. Canva Brand Kit + Magic Studio or Adobe Express locks fonts/colors/logo. For copy tone, build a custom GPT on your brand guidelines instead of fresh-prompting.
Q2 (campaign ideas, hooks, angles): where AI goes generic. Disclosure — I work on HiveMind (myosin.xyz/hivemind), strategy copilot trained on operator frameworks, built for pressure-testing angles and finding contrarian hooks. Code HivemindReddit123 to test against your ChatGPT work. Strategy layer, not production.
Q3 (workflow): Notion (calendar/repurposing), Buffer (batching), OpusClip (repurpose video, pairs with Higgsfield).
Overrated: "all-in-one AI marketing platforms" — 8 things at 60%. Best-of-breed beats bundle for solo operators.
Your construction-stage repetition is a Q2 problem (same angle), not production. Solve at the strategy layer first.