It is a difficult one, i actually don't think it is the "limit" that is the biggest problem.
I think everyone should have informed choice.
Having spent months in SCBU wiht my prem son it would be easy to say that the cut off point should be lower, becaue these very prem babies are little people with their own personalities, likes, dislikes etc.
But life is never that simple, ther are cases when the baby is found to have severe abnormalities incompatible with life that the parents need time & information to make whatever choice is best for them.
Instead of cutting the limit we need to invest training & support in to supporting families at such a difficult time.
Better guidlines also need to be in place to ensure termination is discussed as an option & not just recommended when abnormalities are discovered.