Nothing pleasant pending (2,3)
I believe the answer is:
on ice
'pending' is the definition.
(to put a proposal 'on ice' is to leave it pending)
'nothing pleasant' is the wordplay.
'nothing' becomes 'o' (looks like zero - 0).
'pleasant' becomes 'nice' ('nice' is associated in meaning with 'pleasant').
'o'+'nice'='ON ICE'
(Other definitions for on ice that I've seen before include "Temporarily suspended" , "Predatory insect" , "held back?" , "Waiting" , "Suspended; chilled" .)