Start tracking your time with a simple app like https://github.com/projecthamster/hamster When you start the timer you should only focus on that one task. If you get distracted stop the timer. After a week or month you will have lots of info and it will be easier to decided what to do.
We're building an email client called zinbox which I use everyday. First it was hard to use but after a few ui change it started to get comfortable. I think it's really hard to develop software if you're not using it.
I seem to remember a previous iteration having the auto suggest as well, then it went away. I think it was when they first put the search field at the top of the page.
I think saving time sales point is the biggest bullshit from G. Google should be more honest to there users. They should tell us that they need more page impressions+ads.