The only one I see as a problem (IMO) is #4 - I wish there was a similar downloads bar, especially because I always clean up the download list after I'm done with it.

After using Firefox for years I'm sure I'd have more problems going back to chromium browsers than migrating to Firefox in the first place. Firefox has a much better support to keyboard navigation when it comes to reopening bookmarks and keyword searches. But it's good to address these differences and how to work around them.