wouldn't it be nice...
if user just enables their buttons in wysiwyg settings and wysiwyg filter knows what tags to allow...
as wysiwyg filter should not be bloated
* it should provide a hook to pass in additional allowed-elements
* in settings show "which module added which allowed elements"
and a helper module would do the translation
(although this sounds like a killer feature to me, it is not high prio to me right now, more a memo-to-self)