[Plugin: List Pages Shortcode] Feature request: Sibling-Pages excluding current page?

Sorry to be a bit cheeky here, but I was wondering if it was possible to request for a feature?

I am currently using this plugin on a site (with add_filter('widget_text', 'do_shortcode'); to ensure it works in widgets) and was wondering if it would be easy/possible to list sibling pages (using [sibling-pages]) and exclude the current page?

It would be very useful navigation wise.

Thanks!

http://ww.wp.xz.cn/extend/plugins/list-pages-shortcode/

p/s: Something like this as per this post:
wp_list_pages('title_li=&exclude='.$post->ID);