Fun fact, the forum post is now 17 years old.

I know it's most likely not relevant with you anymore, since you're using Pulse, but have you tried any of the vertical/tree tab extensions?

Even though this is mostly because of the Steam Deck, it's still great news. More people get to try out Linux and find out how good the support for gaming on Linux is nowadays. Some may even feel compelled to switch to it on their main machine, especially after Microsoft drops Windows 10 support and forces everyone to upgrade to Windows 11 (which, while certainly better now, still feels like a downgrade IMO).