Please place the content box in the middle of the screen instead of left-aligned. For those of us developers who have giant screens, this helps reduce neck pain.
When working in 1920 x 1080 screen resolution the email campaign editing page only takes up the right 50% or so of the screen. This is more of a user-experience discomfort than an actual barrier to efficient use but I find it very strange.
Contents set to the left is bit annoying, would be better if would have either assigned it to the center alignment or with the full page. Also I think the top thin line of below the Customize your campaign in editing mode must be with 100% width to cover whole page.
This is an issue that only occurs on our older editor. Please try out our Next Generation Editor - it has a number of improvements that I hope you'll love!