IMO, that looks better and if it was the original design, would have given your primary model line a more uniform, consistent aesthetic, especially with the blue retaining ring on the black bodies. The blue ring and ribbed knurling are signature design cues that make it easier to identify a Wurkkos light.
Granted, Olight does the same, and did it before, but other grumblings about their lights aside, their design and aesthetics have always been good, so it’s not a negative association, even if made in error.
Colorful lights have now become more the norm, so blue trim isn’t always going to coordinate, but when black was the only option, black with blue trim gave them a little flair, and stronger identity to both brands.
I have Jinba-made lights with both types of switches, and from a functional standpoint, the larger rubber covered switch has a better, crisper action than the metal-buttoned switches, which are mushy, and can feel loose (such as on the SP35). That makes the former type of switch better suited to lights with the Anduril UI, where the button has to be repeatedly pressed in specific sequences, and the larger lit area much easier to read than the tiny light-pipe window, which was envisioned as a momentary indicator, not as a beacon or illuminated switch.
Fix the bugs, change the switch, stick with hi-CRI only emitters, and the TS21 would become much more attractive, IMNSHO. Give it a regulated driver, on top, and it would be a very hard to beat package.