@dreinemann99, I think you are caught up in the standardization of display layouts that is underway. This was discussed in the last newsletter. There is a similar topic concerning non-inventory items that may be informative for you.
Your situation illustrates what can happen when you adopt an unconventional workflow, then expect the program to match it as changes occur. You may or may not see an option to display descriptions in the Inventory Items tab listing. But, in the long run, you will be safer to use the program as intended. The developer is simply not able to envision every unusual workflow. And as features proliferate and screen and document space becomes more precious, information that could be displayed when it had no competition may be sacrificed.
Your Norseman product category would also be handled better with a custom field set to show as a column. Then you could give the inventory items more recognizable names. (Surely no one can commit all your numerical codes to memory.)
The short answer is that you cannot change tab listing layouts at the present time, except by adding custom fields set to show as columns. Whether that might become feasible in the future only the developer can say. (And judging from the other topic, any such change might be temporary.) But the closer you adhere to the developer’s vision of the program, the safer you will be against workflow breakages.