Customize Rating system for Wordpress multisite

I have this theme with rating system for listings, come with several own plugins: [login to view URL] I need to rating would be linked not to listings, but to the users company (which may consist of several words). At the same time, I want rating associate with actual users. I want to make the listing owner can not delete ratings and comments made by the other users for him, in case of negative feedback (similar to the example on [login to view URL]). I thought up such a possible solution - created custom post type "Profile", where the user enters their listing with own company info, which will be linked to the user's profile, and visitors can give a rating. The other thing - I have Multisite with 3 themes. I want to on registration user: 1) complete BuddyPress profile for subsite no.A, and 2) redirect users after first login - to submit post on subsite B2 in post type "Profile". Currently 1. step work, and 2. step partly. Task No 1) (essential) - The problem is that the user can skip step 2. I need - if they don't submit listing, they can't continue to use the whole site. And I need for the user can submit only one listing in post type "Profile", and can not delete this listing. Task No 2) - It would be good if the rating should be displayed beside the user's profile, on all post types, all detail pages. Task No 3) (optional) - Would be even better if according to this rating (only one post type Profile) should be work sorting option on all category pages of all other post types (currently it applies separately for each post type). ... To make it easy every theme update process, I would like to these customizations could be made with separate plugins or cede snippets. Perhaps there was another solution for this functionality.