You can still open up emails in the larger view, If I'm not mistaken. I can see and have experienced the issue they are attempting to solve here and this seems

You can still open up emails in the larger view, If I'm not mistaken. I can see and have experienced the issue they are attempting to solve here and this seems like an ok solution. I guess we won't know until we try it. Most emails are short however, at least that should be your goal unless it's something more detailed and then you have a larger canvas to work with.