Emacs power users waste time waiting for slow async searches, especially in large projects. Current tools don't provide enough visibility into bottlenecks.
Create a profiling tool that analyzes search performance and suggests optimizations. Could automatically adjust parameters or switch tools based on context.
Serious Emacs users would pay for this productivity boost. Could be sold to developers at large companies.
Start with basic profiling for common search tools. Add smart optimization later.
The biggest risk is limited market size of performance-conscious Emacs users.