Noun
nice-to-have (plural nice-to-haves)
(informal) A feature that a product or service being designed would ideally have, though it may be impractical at present.
Coordinate term: must-have
This takes PR out of the nice-to-have marketing category that’s first on the budget chopping block, into an integral part of your business growth strategy. Source: Internet
The trouble for Apple – or any platform provider – is apps that cross that line from nice-to-have to completely irreplaceable. Source: Internet