Got a few things Chrome doesn't do that I wish it did.

First of all, the cookie handling is pretty basic. “Restrict how third-party cookies can be used” - it's not clear what that means. I'd much rather see an exception-list model like exists in Firefox, at least as an option for advanced users - in Firefox I have it set to block all cookies, and I add sites on a case-by-case basis.

Tab saving. I use this a lot in Firefox, and, frankly, it makes tabbed browsing a much more interesting proposition. I don't like closing my browser and losing all my tabs, and Chrome doesn't even warn you about it. I actually lost a whole bunch of interesting tabs because I'm so used to having them saved now.

The search bar. The 'type in the address bar' search model is okay and I guess I could get used to it, but I like having a separate search window to save my search terms. Also, not being able to change search engines on the fly is close to a deal-breaker at this point for me, as I have several search engines for different purposes saved in Firefox and I use most of them pretty regularly.

I'll probably come up with more thoughts as I poke at it a bit more. I do some coding myself, so I may actually work toward getting some of these things implemented.