Users from a small group within a Sales team have complained about an object that...

 The two Salesforce features that should be suggested to improve the end-user experience are:

Favorite the often-used object. This feature allows the users to bookmark the object’s tab and access it quickly from the Favorites menu in the header. This way, the users do not have to search for the object in the App Launcher or switch to a different app to use it.

Personalize the navigation bar. This feature allows the users to customize the navigation bar in their Lightning app by adding, removing, or reordering the items. This way, the users can add the object they often use to their navigation bar and access it easily from any page in the app.