A bold suggestion:
850 - Yishun to Boon Lay
Yishun Int, Yishun Ave 5, Sembawang Rd, Sembawang Link, Sembawang
Dr, Sembawang Way, Woodlands Ave 10, Admiralty Rd West, Woodlands
Ave 4, Ave 5, Ave 3, Woodlands Rd, CCK North 6, CCK Dr, CCk North
7, CCK Way, Bt Batok Rd, Bt Batok West Ave 7, West Ave 4, West Ave
2, West Ave 3, Bt Batok Rd, PIE (Express), Jln Bahar,Jurong West
Ave 4, St 64, Boon Lay Int.
931 - Bukit Batok to CCK Cres (Loop)
Bt Batok Int, Bt Batok Ctrl, Bt Batok East Ave 2, Ave 5, West
Ave 5, West Ave 7, West Ave 4, St 33, St 34, West Ave 5, Bt Batok
Rd, CCK Way, CCK Int (Call at CCK Int like what 175 used to do so
at CCk Int), CCK Way, CCK Nth 5, St 52, CCK Dr, CCK Nth 7, CCK
Cres, CCK Nth 7 (Loop)
As you can see it shall be a merger of Svcs 302 & 945