The phrase "worthwhile addition" means that something or someone is valuable, useful, or important when added to a particular situation or group. Full definition
It's so incredibly versatile and a absolutely worthwhile addition to your Spring wardrobe. (finewineandtatertots.com)
«It's a very worthwhile addition and it's here to stay,» says CRISPR researcher Erik Sontheimer of the University of Massachusetts Medical School in Worcester. (sciencemag.org)
Despite having a strong and passionate player base, it's one that is becoming increasingly frustrated by a lack of worthwhile additions to a game that Capcom initially described as a «platform» for the series moving forward. (pauseresume.com)