Mine would probably be a mix of a few of my favourite things from each modern TARDIS using the current set as the base, I would probably keep the current console as is because it probably my favourite modern console but I would add a few more controls and an orange light on the hole that goes around the edge of the console, I do like the potential of the new set but mine would be way smaller. I like the rings above the console on the Toyota (Smith’s 2nd interior and Capaldi’s interior). For the time rotor itself I would choose either something like Smith’s first interior or a modified version of the Toyota’s with elongated rgb crystals instead of orange light bars. The auxiliary panels seen in the Toyota would make a return with a similar design to the main console as well. The railings would have a similar shape to the ones seen in the Series 6 TARDIS.
I would have furniture such as blackboards around the place, maybe a puff or two laying around the main platform. I would also have books laying around,The entrance would be similar to Jodie’s with the full Police Box walls.
The lower floor would have a central column divided into 4 main sections, a Sonic Screwdriver section, a library section, a laboratory section and a workshop section. The lower floor would also have a little holographic fire with more puffs around it, and a green carpet imitating grass all over the floor. I would probably have a mirror, a Snoopy-looking dog house for K9 or a real dog to one side and a picnic table to the other with a food procesor. From the upper platform a string of brightly multicoloured lights would hang down, the main platform would also have clear sections like the 11th’s Doctor glass floor instead of grey sections.
I’m not sure if I would change the color of the walls, I’m not particularly fond of the nuclear white but I don’t know if I would change it. Probably I’d choose a more greyish color, or maybe a more greenish look like the one seen on the original TARDIS console from 1963.
And to finish it all, my exterior would be the first Brachacki TARDIS but with the Capaldi’s box finish and a more clear greenish blue, yellow windows, yellow Police Box signs, the current top lamp design and maybe the black Pull To Open sign.