I’d like to see the error logs, know the reasons for non-delivery, be able to add or delete from the suppression list based on the type of error, know which subscribers have not opened or clicked, which are over quota, which subscribers have labeled my emails as spam, which lists are rejecting for a claim of spam content and what content triggered the alert), which black lists this IP shows up on, which are temporarily delayed, which have no mx record… basically the logs offer a ton of good information about why these emails are rejected. Where are the logs? My process is to review my logs after each mailing. I realize you’re probably trying to make that easy, and perhaps most users want the process to be easy.
I’m also used to total control over html (I know you have some ability here), matching my styles and css settings for the various web sites, getting email notifications of unsubscribes, referencing which subscribers click on which links.
It important for me to cull my lists for those that have never open and read a message, or clicked on a link, and I miss that from version 2.