Show IH: I built StartZig — a place to shape your idea before you build anything

I spent 20 years on the other side of the table, evaluating startup ideas inside an accelerator. Most of the time, the idea itself wasn't the problem — it just wasn't ready yet. Founders hadn't thought through the right things: who the product is really for, what to test first, what an investor would actually push back on.
Over time I realized the hardest and most critical stage is shaping an idea until it actually holds real business value in the market — not just "an idea," but something with a defined edge. Getting there requires three things:

1. A structured, professional process to shape the idea, define its added value, and choose the right features for release — moving deliberately from MVP, to MLP, to a beta-ready system.
2. Real feedback while the concept is still being built — not after launch. Asking people what they think once the product is already in the market is too late; by then you've already paid the price of guessing wrong.

3.A user community built from the earliest stages — so that by the time you're ready to launch, you're not starting from zero.

I built StartZig around exactly these three pieces, so every founder gets this guidance directly, without needing to get into an accelerator first.
What StartZig does:

• An AI mentor that helps you shape and stress-test your idea at every step
• A visual mockup builder, so you can define your product before writing a single line of code
• Pitch practice with virtual angels/VCs that evaluate you like the real thing
• A structured founder community for feedback along the way
• An idea bank, if you don't have a starting idea yet
• Auto-generates a business plan from everything you build
  By the end of the journey, you land on a beta invite page — already populated with the users you gathered along the way — and you can invite additional founders straight from StartZig's own community

It's free. If it helps someone take that first step instead of staying stuck at "I don't know where to start," that's enough for me.
🔗 www.startzig.com
Would love your honest take:

If you're pre-idea or early-stage, would something like this actually get you unstuck, or is the real blocker something else entirely?
What's the one thing you wish someone had walked you through before you built your first version?