mixed bag

English

mixed bag (plural mixed bags)

Any bag containing a mixture of something.
a mixed bag of nuts
(by extension) A group of entities with few characteristics in common.
Synonyms: assortment, rattlebag

The people I met at the support group were a mixed bag: some were grouchy pessimists, and others were cheery do-gooders.
(idiomatic) Something tending to have both good and bad results or characteristics; something having a mixture of advantages and disadvantages.
Owning a car is a mixed bag. It is convenient, but also costly.
- 2011 January 22, Phil McNulty, “Aston Villa 1 - 0 Man City”, in BBC‎:
  It was Villa, however, who posted the next moment of danger with another long-range effort from Young, forcing Hart - who had been a mixed bag throughout - to dive low to his right to save as Houllier's side continued to perform in a most encouraging fashion
- 2021 October 25, Mike Isaac, “Facebook Wrestles With the Features It Used to Define Social Networking”, in The New York Times‎, →ISSN:
  At the same time, it did not alleviate teenagers’ social anxiety and young users did not share more photos, as the company thought they might, leading to a mixed bag of results.

a group of entities with few characteristics in common

idiom about a mixture of advantages and disadvantages