I would love to see some revamped controls for the tardis in a future update, what i mean by this are more functional controls and a way to control the tardis while its in flight.

my main idea for a flight system would be 2 or 3 different panels on the console for things like dimensional travel (nether, end, overworld), one for spatial travel (xyz cords and maybe what planet your shooting for) and then another for speed of travel and steering in the time vortex.  ill elaborate on how these controls would all work, basically youd punch in your destination as you would in the mods current update and youd pull the hand brake to start flying and your destination (cords, dimension/planet) would be displayed on the tardis monitor as youd be flying through the time vortex your cords and planet and things would all drift away from what you want so youd have to go to these new panels and manually change your coordinates and dimension, you would also be able to change the speed of travel maybe by using the hand break or maybe by using a new panel what that would do is change how long it takes to get from point a to point b but it would also speed up your cords drifting  so flying the tardis would be more frantic the faster you go, something similar to the new tardis mod but with unique features specific to the dalek mod. 

another idea is a timelord hardcore game mode 

so youd start off with 12 regenerations and a crashed tardis (a damaged tt capsule that youd have to repair somehow) and everything you need to start your intergalactic travels, you could also maybe start out on a random planet or maybe even the nether since its livable in 1.16, and heres the best part if you loose all your regenerations you can only spectate the world like in regular hardcore  minecraft. youd still be able to use the untempered scism to gain more regenerations so its not too difficult, it could be a fun way to play hardcore but somewhat easier an d more enjoyable for the average player but still with just enough difficulty to add a little bit of danger 

other ideas would be a biome scanner (to find biomes on the overworld, nether and all the planets) and space dimension (mostly as a novelty but it might be cool to build your own space stations.