Well Pavel Durov, your pinned tab / feed is good, but you could learn from LinkedIn too ...

Means adding more features to organise all posts. Near the current pinned feed you could add for example another way to pin messages under the channel description.

Plus you could implement a whole better organisation of the content inside channels, with playlist / folders, suggesting relevant posts (even using AI to detect the text from pictures), etc. So like said, organisation of the content is still not perfect, social like Facebook can do it better.

No matter what, such feature are less important compared to
@grannouncements453 ...