Here's my direct feedback, as a member of your target audience:

The call to action says "Copy prompt", not "Unlock prompt", "Sign in to copy", or "Get Creative to access prompts". I didn't even go past the signup to see if the prompts themselves are actually free and work without a subscription to your hosted MCP server. There's a GitHub link in the header suggesting an OSS tier, at the least. That repo may include "prompts" folders, but no prompts are there. The README doesn't even hint that this is a paid library of assets/prompts until the very end, with the misspelled "enhanched" sentence under the "Pro" header. The only prompts that appear to be in the repo (other than those that configure an agent how to use the paid and hosted MCP) are basic design guidelines.

Getting back to the website: your hero text directly invites users to "Try each example and copy its implementation prompt." Which immediately demands the aforementioned signup flow that I didn't bother completing.

All of that just turned me right off.

Your examples are nice, if a bit generic. But if you intended this to be a loss-leader for the more "enhanched" UI/UX skills, it isn't doing that job.