Adding my vote to this - we are missing out ona lot of follow-through with campaign data. Please, please, please allow Wordpress pages and other external pages to be included in campaigns. Each campaign release we perform for our clients typically include a social media posts, landing pages with forms, pillar page support pages, marketing emails and advertising campaigns.
Wee need page data here, and many of our client sites have custom functionality, API integrations and structures they are not interested in moving over to HubSpot CMS.