Please build this! I have a large family with a mix of android and ios users, ages 18 to 80. We end up using long running text message threads as an ad-hoc social network, with people posting pictures, links, updates, comments, etc., and things get disorganized because discussions are not threaded.
I would love "reddit for families" -- for lack of a better description. Threaded discussion with easy "posting" of pictures, links, and videos, with a simple interface similar to imessage or google messages, which everyone already knows how to use.