Ability to hide fields from details view
There are some fields we use to work out attribution. For instance, name of the campaign referring a customer, name of the source, etc.
These details don't matter much to the sales team, but without the option to hide them from the Details view, it is one more annoying thing to look at (think really long numbers when you use Lead ID, Campaign ID from Facebook Lead gen).
In the data fields setting, it would be nice to have a flag to force hide a field, even if it is filled.