I like to request that phpminiadmin add something that shows how much memory each table takes up. Like when view all the tables, there is also a column there that tells you how much megabytes the table took up and etc.
It would be extremely useful if the person had a free web host with a limited sql storage and with this, you can optimize the sql tables manually to make it smaller by first seeing how big each one is.
And maybe somewhere that shows how big the whole sql database is. I don't know if this is possible but, this is only an idea.
added in 1.8.120510