Honestly, i think this is a way stronger position than just saying "I write copy." You're shifting from selling deliverables to fixing revenue leakage - way more valuable conversation.
and you're spot on: loads of B2B companies obsess over ad targeting while completely fumbling what happens after the click. Especially on LinkedIn, where clicks already cost a fortune.
i also reckon you're safer from AI competition than people realise. Companies rarely pay serious money for "words." They pay for conversion improvement, strategic thinking, funnel diagnosis, messaging clarity, and revenue impact.
The bigger risk is attribution complexity. Once you position yourself around improving lead quality or conversion rates, you inherit responsibility for stuff partially outside your control - sales team quality, speed-to-lead, offer strength, pricing, product-market fit, CRM chaos, weak onboarding, bad follow-up. so I'd probably frame it less like "I guarantee profitable LinkedIn ads" and more like "I optimise post-click conversion and lead journey efficiency." Small shift, but it matters.
also, wouldn't anchor the positioning too tightly to LinkedIn long-term. The real value prop is probably "B2B demand conversion optimisation" or "post-click funnel strategy for high-intent traffic." That way you can expand into Google Ads, webinars, organic inbound, outbound funnels, founder content, email acquisition - without rebuilding your identity.
One more thing: your target clients matter a lot. this works best for companies already spending meaningful money, already getting traffic, already believing in marketing, and already having some sales infrastructure. Not companies still trying to prove basic demand exists. Your offer is optimisation leverage, not magic resurrection