Before the median price was introduced, the pegging was doing fine but there was a danger that bitUSD will lose track of the USD and then the whole Bitsharex it will not work.
Now the bitUSD is not in danger of not tracking USD but the market is dead.
I rather preferred the peg to track and in no danger!!! Let see with the GUI changes then I suspect you'll not see that many short out of range, and much more trading happening.