• grey text (easier on the eyes, especially in night mode at night); like post preview text in feed
• full height posts without post preview (headline view is too small)
• compact posts setting for general post view/display; similar to compact comments (community and user name only 1 line instead of 2, smaller avatar image, …)
• mark as read on scroll/open
• remember settings (post view size, show/hide read) per community

Thanks for all your work, these are just a few suggestions.