1. The default SilverStripe search form only searches page titles and content field (as in SiteTree). How can you limit the search to only a custom field added to all page types? This would enable the site admin to define exactly what can be searched on any page.
2. In the default SilverStripe search form you cannot search for common words and anything of length 3 characters or less. How can you remove this restriction? Following from point 1 above, the site admin may wish to define 3 character abbreviations as searchable keywords.