I can't exactly say why, but I do feel, we are going to see clash of titans, started.
Time is not passing in the favor of Saudis, Houthies are playing a chess game (maybe with the help of external forces) that will end to a reduction in probability of an aerial raid effectiveness from SA (or maybe the gulf coalition) by each passing moment.
As Yemen is the matter of a great strategical importance for Saudi Arabia, that will leave SA with no more than two choices,
Whether opting a boots on ground policy, which considering the population and size of Yemen, would most probably stay a never chosen option.
Or to start importing artificial rebels (or whatever you call them, jihadis, takfiries, wahabis, freedom fighters, ....) into Yemen trying to counter Houthi influence, which considering the SA's religious topography would be more like playing with fire.
So my two cents, whether this situation to be dealt with soon, or as I said, sit tight, we are gonna watch clash of titans, started.