Even if it's one striker (and I agree we need to see more from Maynard as well) that is possibly the trickiest position to fill at the best of times. How many 20 a season strikers are knocking around and available in March? Anyone who has one of those won't be letting go at this point unless there are non-football reasons.
I think it's less likely that we don't want to have a go (Lloyd, Maynard and Hogan are statements of intent for me) and more likely that we can't find the right player at the moment.