There should be a "Marketo Inspector" that allowed users to search across all Marketo assets, not just campaigns. Similar to campaign inspector, it would be one place where you can view all assets in one place and search or filter them based on asset type or different attributes.For instance, you could search for
Emails by subject line
Landing pages by URL
Forms by fields used
Forms by follow-up page setting
Campaigns by specific values inside the flow steps
Programs by tags, channel or program status
This would be extremely useful for admins and users to be able to manage and audit what exists in a growing Marketo instance.