[Mooff]

yes, it is possible - not sure if you can use the bb-code manager for it though.

I'm currently writing a bbcode with multiple options via the plugin system right now.
(it's a gallery code )

hook: bbcode_create

if (!function_exists('handle_bbcode_gallery'))
{
    function handle_bbcode_gallery(&$parser, $code, $option='')
    { 
.... do stuff....
option could be something like [gallery="a=...;b=....;c=....;"]some bla[/gallery]
so $option would be a string "a=...;b=...;c=...;" which you can manipulate via php to split it up in the 3 options a,b,c and in the $code variable you have the string "some bla"
.... end do php stuff...
return $output_string;

    }
}

$this->tag_list['option']['gallery'] = array(
	'callback' => 'handle_external',
	'strip_empty' => true,
	'stop_parse' => false,
	'disable_smilies' => true,
	'disable_wordwrap' => true,
	'strip_space_after' => 1,
	'external_callback' => 'handle_bbcode_gallery'
);