Ketch - new open source tool by shipa trying to provide a solution for deploying apps directly onto the cluster without writing any Yaml. I have written a blog that gives a overview of what it is and how it can be used. What are your thoughts?
How would I tune (set) resource req & lim settings?
How do security settings get set, like PSP and service mesh allow/deny?
AFAIK there is a ketch.yaml that can be defined for customisation. This is a pre alpha version so there will lot of things coming up in future like editing the fields that you mentioned and deploy. Some level exists via the ketch.yaml.