I despise the term I"f it ain't broke, don't fix it!". Thats how innovation stays static. Tesla is not a I"f it ain't broke, don't fix it!" company.
That's not true at all. Just looking at one element of the UI, the Instrument Cluster, tell me one thing on that part of the screen that was no good. Tell me the reason why the whole Instrument Cluster display needed to be redesigned and tell me why this new design is better than the old design. Now I'll tell you it wasn't broke, so it didn't need to be fixed. What I will also say is you could add the % battery remaining and the estimated range to the display (something like 50% = 175mi) and that is a change that adds value to a lot of people without detracting from what was already there. In fact, they took something that was not broke and they broke it. Chill label was at the top, 100% of the time easily visible to remind you that you are in chill mode, but now it is at the bottom, and gets hidden if you open the trip meter card. The hold icon was at the top, as were all the system symbols (headlights, high beams, etc), now that is broke as it is down the edge of the screen and blocked by the steering wheel and especially by my hands and arms in the 10-3 position.
Now I'll innovate for you. At the moment we have information across the top of the screen. In 1 weeks usage of the car there are a couple icons in that top row, for instance the Dash Cam icon, that I use. Maybe there are many ways to activate the dash cam, but I just press that icon. But it is really small and it is really close to the other icons, so 2 times out of 3 I press the wrong icon. Yet there is heaps of dead space along that icon line, so why not spread them out a bit more and instantly make them easier to use? That's something that is broke and could be fixed but they didn't change it at all.
Here's another one for you. There are icons along the bottom of the screen. People complain because some of the useful driver features are not easy to access, so in this new UI Tesla has placed some of those icons there. Most of those icons are driver focussed, but because the icons are along the bottom of the screen they get further away from the driver to reach (hopefully the most use are closer and the least used are further away). Now in the new UI they have taken all the indicator symbols and run them down the drivers side edge of the screen (moving them from along the top of the Instrument Cluster). So what they could have done instead is to move the driver focussed icons down the drivers side edge of the screen. Now all the driver control icons are easy to reach and right there. If the visualisation can be changed from 1/3 the screen to 1/2 the screen, then a very thin vertical column of icons would take up almost no space on this huge screen.
There you go, didn't fix what wasn't broke and innovated the UI to make it more useful to the majority of owners. Didn't have to redesign the whole screen, just tweaked a few areas where it didn't work quite as well as it could have. And to be really innovative they could have easily provided a menu option to switch UI's, then to really innovate they could use their telematics to see how many people change to the new UI and how many people stayed with the new UI. And to be incredibly innovative they could incorporate a survey to find out why people didn't stay with the new UI. So many ways to innovate without breaking something that was not broken.