@leocg Thank you, this is exactly the functionality I hoped for. Now, the only thing would be to move these way higher, maybe right underneath the workspace icons, as they are important.

There are some sites that get everyday use, same as the ones currently offered in the sidebar, but different from user to user. For Example I don't use Telegram, but I use Slack.
I'd love having the possibility of pinning to the sidebar (next to Instagram, X and the others) some custom URLs of mine, such as Slack, Soundcloud. The advantage would be that this space is permanently and easily available for someone who uses workspaces.

I find it very useful to always have the same pinned tabs, both for personal and professional purposes. I use "Retain tabs from previous session" but sometimes these pinned tabs get lost and I have to pin them again which is inconvenient.

I'd love top have a new option alongside the existing "On startup" ones:
"Open My Previously Pinned Tabs" - then maybe "Include the tabs that weren't pinned" as a sub-option.