what? you mean by open our inventory there will be a crafting table on the side? like minecraft? Nah, bit of too simple, sorry. Not only that I will find it annoying if I had crafting tab next to my item tab.
so, get use to it. I find it more annoying if you have trillions tabs, they are more worst then windows pop up.
I like how it is. I think it would be annoying to combine the crafting window and the inventory window, because both have lots of very specific functionalities.