Also, theres a difference between "streamlining" and "removing options". True, the interface was streamlined for consoles into a semi-circular menu but why is that bad? Are you actually saying it made more sense to have to stop and bring up a screen-sized box menu?
Uh, are you actually arguing that DX2's interface was better than DX1's? DX1's interface was perfect. It gave detailed, easily accessible information. Inventory management was a breeze. DX2's interface was bloated, didn't provide detailed information and inventory management was clunky and inefficient.
Streamlining = removing redundancy and inefficiency. DX2's interface didn't remove redundancy or inefficiency... it added them.
Here's a good example of streamlining an interface: In Arcanum, if you wanted to check out your companions' stats or inventory, you had to do it manually by clicking on them. However, once you were inside their stat or inventory screen, you could click on little arrows to cycle through the other companions. These arrows only appeared when you brought up a companion's screen though. If this were streamlined, you could just bring up your own stat/inventory screen, then click on the little arrows to cycle through your companions. That = streamlined functionality.
Here's another example in Arcanum yet again: The inventory uses a grid to place your items. If you try to place an item but don't have spots available in the shape of the item, you won't be able to put the item in. You'll have to manually rearrange your items first and open up the spots needed. If this were streamlined, there would be an auto-arrange option, where items automatically relocate to free up space for new items. Again, streamlining is supposed to remove inefficiency and redundancy, not functionality or detail.
Oh, you want another wonderful example, eh? Okay! System Shock 2 had a terrible interface. There were only two ways to use items: Use the hotkey or manually bring up the inventory and use the item there. Many items did not have hotkeys assigned to them. Also, the game did not pause when you brought up the inventory. Therefore, if you wanted to use certain items in the heat of battle, you'd have to bring up the inventory, essentially blinding you while you run around trying not to die. If this were streamlined, they would have used the same quick inventory bar as DX1. You'd have a row of 10 slots into which you could place any item or Psi power. Pressing the respective number key would use that item or power. Voila, streamlined interface goodness.