It would be nice if you could choose how many rules per chain you want to view per page. Useful if you got a lot of rules. (Perhaps you caneven add a kind of rule-search?)
Furthermore, modifying the title of each chain, conatining the number of rules, would improve the overview. Example:
"Incoming packets (INPUT) - Only applies to packets addressed to this host - Currently 47 Rules"
Currently, you can only view the number of rules of user-defined chains, if you click on "rename chain".