Custom content per account
Different accounts have different requirements (Tiktok support only video, Twitter(X) has character limit 280, etc.)
When planning 1 post to push on multiple accounts, allow to customize the content / media per account (or account type)
I think Buffer does this, you write your text, and when selecting channels, it opens new content editing area and allow to customize media attached.
Currently, when publishing to FB + IG + Tiktok + X, I need to create the FB + IG first, queue it, then duplicate and edit for Tiktok, if I queue again, it uses next time slot, not the same, I need to manually set it to the same timeslot. Then repeat again for X.
There's a plus icon next to original, you can use it to create different variations of your post and use a single post to post to all your channels.