Many other platforms/third party sites have this already. Just a place to freely move images around and see how it would look on an Instagram grid - without having to schedule them. Even simply changing the media library rows of 3 to being able to put the pictures where you want them would help preview it first.
It would be really helpful to have a draft section on the platform to try images next to each other and see what it would look like WITHOUT have to schedule them. It's too many extra steps and you risk accidentally posting something without a caption/tags/hashtags if you don't take it off while trying to plan your grid.
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