Many to Many - Automatic association for Primary Account
When reps are on mobile, creating new contacts in the field requires multiple steps to associate accounts and contacts. There is no option to add associations when creating new contacts on mobile and requires two steps for accounts.
When creating a custom field, we have the option to use check boxes to allow our teams to select multiple options. When it's presented on web and mobile, it would be easier to read if it appeared as a bulleted list.