indeed you can manage the individual records on the dns server, but the default setup for me just sets up www and point the default mail to that,, it would be nice to be able to create a default template for your dns configuration, much like a hosting plan option (by default have mail. and ftp. as well as www. pointed at the server ip)
This is just as often when moving people from one server to another, they have their ftp clients or mail programs pointed in that way and are used to it.
if your hosting over a hundred domains I wouldn't wish it on my worst enemy to go through the interface altering every single record for every domain in the system. That would be torturous.
If i learn enough to write code for this system, i'll see what i can do to add such a feature i guess