TAKE AWAY THE CUTE-SY FACTOR
I do not like the bubbles and image showing of emails. It is too much visually, and not straight forward enough. I like the clean lines of the old version more.
First off, thank you for taking time to provide feedback and for trying the new Outlook on the web experience.
I just wanted to let you know that there are options that can be disabled to reduce some of the color.
Click on the gear in the top right and disable both attachment previews and sender photos.
Hope this helps!