It's great that you can use Sharing to share a record between users to help with data management. However there is no way to use ta option to filter record when say creating a View (e.g. show me records I own plus all those that are shared with me.)

I understand this is baked into the security model so if you pick 'All Contacts' shared records will show - but you not want to provide the 'All' option and it would be great to have an ability to include Shared records when filtering.

It would be great to also extend that into Custom pages too so data pulled into a Collection would be able to pick up this filtering option.