Now we re all on free DAW, no nee for backwards compatibility really, but of course as new features are added, the themes need to contain them.
I think theme editor allows us to be really creative with the themes. So far everyone seems content with changing the hue, adding filters, but not really creating anything new.With my three control bars, they were designed from the ground up, looking a how to manipulate the rules of how the modules look and the buttons function. I've tried to create something different, than modified. I really hope that others do the same. One poster 2 years back was doing an Ableton flat simplistic theme, it looked rely cool, but it dried up. I guess that the was obstacle built into theme that create a conflict, or he just got bored.
I'm was really happy to see that e can now colourise the Performance Modules bars, as their fixed colours stood out like a aw thumb on some themes, it aslo showed Bandlab are sticking with the Theme Editor. It wouldn't have surprised me if it was dropped.