Track lifetime memberships that never lapse using the membership management feature. This would let you can see whether someone is a lifetime member in the same places you'd see paying memberships.
Having a default value for a custom field would allow for currently blank fields to at least have a value in them, especially if the value is mostly consistent across the organization. It saves time from having to always manually update a field.
Ability to replicate values from one custom field when creating another custom field
It would be very useful to be able to save lists that we could choose from when creating custom fields. For example, I will use the same list for "point of contact" in many different sections and custom fields. It would be nice to not have to type...
Add "group by" view for multi-select columns to only show single values
In reporting, users can group by a column. Column types where multiple values may be associated with a constituent will group by the various, multiple combinations of those values. Some users do not want all of the combinations and instead want a ...
The ability to change the custom field type from Number to text would be great. I understand that the opposite might not be possible but from number to text won't hurt technically since you can safely convert number to text.
Change username so that you can fix typos, adjust to name changes, or standardize username formats for your organization without deleting & recreating users.
Hide specific constituents from some users so that they can't access contact information. Example: Hide a celebrity's support for your organization from most of your team members.
See System-defined static Groups in the constituent header or summary
See Static Groups in the constituent header so you don't have to check on the Profile page to see if someone is as a board member, former board member, volunteer, or staff.