I have mixed feelings about this development.

On the one hand, I worry that a new AG may try to quash the Mueller investigation. As Martin wrote, Trump is showing all the signs of someone with something to hide and I want the whole story to be told.

On the other hand, if Trump dumps Sessions and it causes yet another fall in his popular support numbers(it will never be zero), that would put him another step closer to the humiliating end of power that he so richly deserves.

The good news for everyone with a lick of sense is that Trump is demonstrating his unworthiness to be POTUS on a daily basis. 

You certainly have to wonder how this could possibly end well?