My wild and audacious idea is that in addition to having CSV templates with multiple posts, we could have a library of single social posts. You search for a post by tag and then drag and drop the post you want onto a day in the calendar...

Right now, if you want a Father's Day post from templates, each template has 25 Father's Day posts—and you only need one! The process is about 30 clicks to import the template, delete every post you DON'T want, and then review and publish from the template/CSV import to the planner.