andylegate wrote:1) How is the general ambience of the Age? Does it feel like you're somewhere down in the Cavern?
2) What kind of view should the window in the office have? One like the Hoods by the telescope, or one like the Baron's Office?
3) Does the Age's lighting feel too dark? Too light? Just right?
Okay, some comments.
First impression: really nice, and well done. (Already saw your progress report in your GoMa thread, very cool to visit it.)
1) "Does it feel like you're somewhere down in the Cavern?"
Not yet. There's something missing... maybe some broken stones in the corners, lying around in the main room with the fountain, where you link in. I know you are not finished, just as a hint. This way it looks so tidy. Or - could you add some stairs? Either put the fountain 2-3 stairs down, or up? In a circular manner. This would break the large floor into something less flat. The ambience itself is really nice.
And the lamps look too white in my opinion. Like human lamps, not D'ni ones.
2) Because it's a window (which is good), looking like the one in Baron's office would fit better.
But, well, it depends on which impression you like to suggest to visitor. Lake-height or something viewed from top?
3) The overall lighting is okay, with some exceptions:
a) The floor in the fountain room is a very little bit too bright. The walls are perfect.
b) The bridge is much too bright, especially at the ends - except you plan to add some lamps there (and I guess you do).
c) The walls around the bridge are a perfect example how lighting in a cavern-style should be done. You hit the nail on the head here.
d) The water around the bridge could be a bit less blueish (water isn't blue itself - mostly it looks blue because it reflects the sky. Unlikely to happen in a cavern.

e) The ambient lighting in the office is okay, but the walls need a bit shading and less brightness. I doubt the single lamp can lit them so bright.
f) The water in the fountain is glowing on it's own. Are there underwater lamps planned? If not, you could reduce the glowing effect.
g) Because the lamps around the fountain radiate towards the top, I miss a bit more illumination at the chamber's top ring.
h) Maybe it's the missing shadows, but for me the avatar itself looks like it was mounted into the view after the scene was rendered. Try moving the slider... umm.. I mean, it would look more realistic in the scenes if you reduce the avatar lighting main lamp's energy to about 80% of the current value (20% less), to get it more dark on sides which are obviously not lit by visible lamps. Or maybe reduce all lamps to about 80%.
Sorry for disassembling your age this way, but - well, you asked.

Edit2: Oh, I forgot something. The sound. I forgot it because I did not even realize it was there, which was caused by the fact that it's absolutely perfect. Not obviously there, but there, and matching the ambience. Congratulations.