I disagree. It probably won’t be as popular as an app that does have editing features but personally I’m fine with the lack of this feature.
I would also rather just edit photos in another dedicated app. IMO this is in line with the UNIX philosophy and I like that.
I think it depends on your app I’m not really sure.
But it should be pretty safe to just post it here. If not I can give you my pubic key and you can encrypt the link?