Oh absolutely agreed. I use Tree Style Tabs (TST) and consider it essential now, but I wish Firefox would embrace vertical tabs as a way to remain distinct from Google Chrome.
I have 15 tabs open right now. The tabs' titles are easy to read, and different sites have different colours assigned to them. My Kagi searches open in new tabs, which are automatically set as child branches/leaves of the parent tab, which helps me to organize my work. If I go over about 30 tabs, I can just scroll the TST view with the mouse wheel, it's very easy and is non-intrusive to my workflow.
I can also bookmark tab trees, which is nice when I want to switch context from Python to Terraform for instance.
I have 15 tabs open right now. The tabs' titles are easy to read, and different sites have different colours assigned to them. My Kagi searches open in new tabs, which are automatically set as child branches/leaves of the parent tab, which helps me to organize my work. If I go over about 30 tabs, I can just scroll the TST view with the mouse wheel, it's very easy and is non-intrusive to my workflow.
I can also bookmark tab trees, which is nice when I want to switch context from Python to Terraform for instance.