From the past experience with graphical user interfaces (GUI) we know that creating a gui that not only looks great but is also effortless and intuitive to use is hard work. For LoG1 we did many, many iterations before settling down with the final design (by scanning older blog posts you can see various incarnations that evolve to the final version). We are pretty happy with the original gui but as always there is still room for improvement.
The changes are not just eye-candy, some of them make the gui more usable. For example, you can now cycle through the characters by clicking on the arrows on the left and right side of the portrait. Also, the main statistics, experience, food, health, energy, protection and evasion are always visible on the upper half of the character sheet. With a quick glance you can now see whose character sheet is open regardless which tab is active.
On the visual side, the little drips of brown and green here and there remind of the new outdoor environments. A little feature that we wanted to do for Grimrock 1, but didnít have enough time, is race and gender specific inventory panel backgrounds. Naturally now that we have moddable races (did I mention this feature already?), mods can define new background images for new races.