[ 2010 Rapperswil: ]
The issue was lengthy discussed and implementation experience was demonstrated that a non-void return type is implementable for both single-linked and double-linked lists without loss of efficiency.
By a 12-1-1-0 poll voted to keep the return type of erase as iterator instead of void and a second 0-0-3-10 poll rejected the additional proposal to add a quick_erase returning void, thus LWG decided for NAD.