> For a moment I was mesmerised by its features, how it behaved, and the quirkiness of it.
I think the most important job for a browser is to stay in the background and let the user focus on the website. Chrome does this beautifully. It's elegant, but not eye-catching. It takes up little space for its own UI, and leaves most space to the website.
> At the start, I would use the command bar to quickly make a web search, open a new tab, (try to) launch an existing tab by entering the name of the page, and even perform actions like pinning the current tab.
These are all things you can already do in the addressbar, except for opening a new tab, which is just as easy as opening the command bar.