I don't know if this is feedback for Kiro per se or more feedback for this category of applications as a whole, but I've personally noticed that the biggest barrier holding me back from giving an earnest look at new coding agents are the custom rules I've set up w/ my existing agents. I have extensively used Copilot, Continue, Cursor, Cline, Aider, Roo Code, and Claude Code. I've just finished porting my rules over to Claude Code and this is something I do not want to do again [even if it's as simple as dragging and dropping files].
Companies would benefit a lot by creating better onboarding flows that migrate users from other applications. It should either bring in the rules 1:1 or have an llm agent transform them into a format that works better for the agent.