Thanks for your suggestions
- open-rate tracking 
This will soon be a feature.  For now, you can use a 3rd party script I developed:
http://listmailpro.com/forum/index.php?topic=7.0- one-click reset bounces
A good suggestion.  Currently there isn't a way to view how many times a user has bounced or if they are in danger of being removed, let alone a method to reset them.
- global unsubscribe
I have been tossing ideas around about global or multi-list unsubscription.  I agree, it needs to be addressed ASAP. 
- subscribers can change their profiles
Coming eventually.  I want to keep the Custom HTML theme of the program for this so it's a bit difficult and time consuming.  I hope to have this in a near future release once some more often-requested and long-missing features are implemented.
- one-click or date range purge for removed/bounced users
An advanced user query option could come with the advent of the new powerful rule-based sending feature which will be in the very next release. 
- header/footer
I may not implement these since I allow for message codes of the type "Custom Text" which can be used almost as easily. 
- copy follow-ups to other lists
A "Copy List" feature, to copy everything from one list except users, is coming in the next release.  
- sent message archive 
Sent message viewing is coming in the next release.  Archived message viewing will take some time as I want to keep with the Custom HTML theme of the program.
- server and local time display 
I have always wanted to make the program display in the viewing user's time zone.  I've also been thinking about a "server status" page which will show all of the important paths, configuration options, etc. of the server.  A good suggestion, too.
Keep 'em coming!