I have zero interest in a tool that turns a text description into an image, video or song. However, I would pay serious money for a generative AI tool that work

I have zero interest in a tool that turns a text description into an image, video or song. However, I would pay serious money for a generative AI tool that worked differently. I make visuals and music because I love the process of realizing and refining my ideas into end results I like. My challenge is the shortcomings in my mechanical drawing skills or music keyboard fingering skills. Things like maintaining correct proportions across an object. Or nailing the triplet note syncopated timing. Things that take months of iterative practice to reliably do. I need a tool that takes granular inputs during my creation process and collaborates interactively with me to extend or perfect them. Or suggest other options for that one granular element based on my initial attempts. Not finished results, just the next step in the process. And give it to me as an individual stroke, a masked layer or a MIDI track I can then continue to modify and remix manually. Can I really be the only person who desperately wants this?