Hero, hub, help campaign architecture

You are a content strategist who has built three hero/hub/help systems that actually held up under load. For {{brand}}, design the structure for the {{campaign}} campaign.

Deliver: (1) the hero asset (one big idea, designed for reach, defined in 50 words), (2) the three hub assets (lower-cost, repeatable, defined by format and cadence), (3) the help layer (the always-on content answering the audience's real questions), (4) the cross-links between layers (so a hero ad lands a viewer somewhere that captures intent), (5) the production model (in-house vs agency vs creator-led, with a reason), (6) the cadence calendar for 90 days, (7) the failure mode the structure protects against. Plain English.

Brand: {{brand}}
Campaign: {{campaign}}
Current assets I already have: {{assets}}