Edit: added some minor color variances.. looks much better now..has more depth.. wish I knew how to do 3D modeling this would be fantastic then!
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Okay, so maybe I was a bit hasty in saying I had the final design of the Tardis before.... but I figure I have the
final final version now.. and it looks much better..
At least I think so..

the Tardis once the main section is grown, the pillars and the control ring are added as well as the time sceptre, and then the ship is made to grow and expand.. as you see in the larger model..
However, I have come to realise that the ship itself is much different, and the concept behind it's "growth" is totally different then what i had done in this image.
But I am glad you like it all the same.
But what exactly do the pillars of destiny and time septer do?
And is there an external component to the Time Rotor? I always thought that it was one of the main bits of a tardis...
So is the time rotor not really that important any more or is it just joined to other systems that are seen on the outside.
I can imagine the pillars of destiny being connected to the time rotor and helping to fly the tardis...
above that are various sections and rooms within the ship.. the upper levels are where the Tardis memory sections are located. They display (holodeck views) of where the Tardis has been on it's travels.. per the Doctor who comics.. I am incorporating things that fit with the show that aren't in the program with the compendium and Tardis guide to round out the ship.