With the Harwin pins I solve that I solder them in the board with a distance.
Yes I agree with you that soldering from the LED WS2812B is not easy but can be solved.
The question is for whom should we provide the kits?
A certain basic knowledge of soldering should be available.
In the last Nixie workshop with 6 people I had to re-solder 11 WS2812B because the previous knowledge for this wokshop was not fulfilled.
SMD components are also part of the IN-14 Modular, which is a major challenge for some watchmakers.
I also worked with the WS2812B 3535 used with a 0.2mm soldering tip and 0.3mm solder wire and with a 10x magnifier this works very well.
I am currently thinking of constructing an SMD variant. All large components on the bottom to have a tidy top with SMD 1206.
Let's see how far I get