Only ITV will know what sort of figures they were looking for for GNO though the steady upward trend over the last few weeks is an optimistic sign.
I think Jonwo's situation of 30 minute episodes for series 2, partnered with another of the increased number of comedy projects that ITV seem to be willing to try, would be a good idea. Along with repeats of series 1 either post News At Ten on ITV or on ITV3 or ITV4. (Not sure the programme fits with ITV2, although maybe it does if it has a high female audience as rzt seems to be suggesting). The advantage of repeats on a digital channel is that they can have a few of them to try and attract more and more casual viewers.