leave a lot to be desired

Also, leave a great deal or much to be desired. Be imperfect or unsatisfactory. For example, His account of the election leaves a lot to be desired. This usage can also be put in a more positive way, that is, leave nothing to be desired, meaning “to be perfectly satisfactory,” as in His account leaves nothing to be desired. [Late 1700s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.