add features joomla component

well i have the sobi2 component and i want a plugin to recommend any entry to a friend by email (when exploring each one it should show and hyperlink for this). and if the user likes the entry to add it to a favourite list (same thing as before but for registered users of course and besides Your Entries, Your Details and Logout at the User Menu also show a link for Your Favourite list.) when viewing a categorie or a letter directory to show as a plain list instead of square for each entry (need to check back end for view configuration option or at the template configs) those results as plain lists and all modules should have the possibility to sort descending or ascending (in all available collums). those collums should be selected at the back end (eg: name, rating, etc.) (something like a drop down menu with all available fields and the option to select the diserable ones to show, sounds ok for me if you have a better idea great!) when adding a new entry i want a field for place the expiration date. module for ending soon entries. must respect the already multi language interface the componenet has. if you want to look for and website really close to these all ideas please left a message.