My experience with the new editing/building tools for the newsletters is that it is not as user-friendly and does not allow me to make a newsletter the way I like and did before. What I hope you'll do is:
ALLOW ACCOUNTS/USERS TO DISABLE THE AUTOMATIC MOBILE VIEW. The thing is, I don't like the way the mobile version puts everything into one column. The layout looks bad. Please allow me to disable it so folks can see the newsletter the way I build it, whether they view from a desktop or phone.
I don't like how adding images can only be done so in stacked blocks. We used to be able to insert an image into the layout and have copy around it.
When I make the newsletter issue, I now have to go into preview and then click mobile view to see how it'll actually turn out. In most cases, I have to correct fonts and spacing.
Please consider these very key changes. I've been a longtime customer for many years and absolutely hate the new way Constant Contact works from my end.