Not a feature request, just a thank you. Orion is the only desktop browser I've used besides Safari that does pinned tabs in a way that makes sense: It's not the tab I want pinned but the website. When I pin gmail, gcal, or whatever it's truly locked in place. Any action (link, search, enter new address) that would take me away from the pinned site gets a new tab instead of replacing the thing I wanted pinned.
Firefox gets this partially right where link clicks will give you a new tab. But a search or new address in the search bar replaces the tab.
Chromium based browsers it seems don't pin the site at all; they just pin the tab and anything you do in that pinned tab will replace the original website.
Oh and in addition, I believe Orion will pre-warm the pinned tab on startup, rather than making you click on it first, which (I think?) Safari doesn't do.