I understand that this is contrary to your question, but I might suggest a different approach to your inquiry.
Instead of asking people for their dev tool ideas, ask them what problems they have with Kubernetes that aren't yet solved well for them. With that information you can iterate on dev tool ideas that could potentially solve those problems. In my experience people understand their problems better than the potential solutions to those problems, and right now you're asking people for their solutions.
Instead of asking people for their dev tool ideas, ask them what problems they have with Kubernetes that aren't yet solved well for them. With that information you can iterate on dev tool ideas that could potentially solve those problems. In my experience people understand their problems better than the potential solutions to those problems, and right now you're asking people for their solutions.