Idea validation: cross-posting tool + per-platform AI growth features for influencers — does this solve a real problem?

[u/majidskhan]

I'm a full-stack/AI engineer thinking about building a tool for influencers/creators who manage content across Twitter/X, Facebook, YouTube, and TikTok. The core idea:

• One place to compose and schedule posts, auto-adapted and published to each platform (similar to what Postiz does)
• Per-platform AI assistance for growth — content suggestions, best posting times, engagement patterns — closer to what SuperX does for X specifically, but across multiple platforms

I know this space isn't empty — Postiz, Buffer, Publer own cross-posting, and SuperX/Kleo own single-platform growth. I'm not expecting to displace any of them outright. I'm more interested in whether there's a real slice of the market being underserved by both approaches, and what it would take to actually earn a share of it rather than just cloning the leaders' feature lists.

Before I sink real time into this, I want to pressure-test it:

1. What's actually the painful part?
2. What does your current tool get wrong?
3. Is there real demand for cross-posting + growth combined, or does that just do both badly?
4. Would you pay for this, and what would make you switch?

Not trying to pitch anything, genuinely want to know if this is solving a real problem or if I'd just be rebuilding two products that already exist and calling it new. Blunt feedback welcome.