The naked vias are just a matter of ordering yet another batch of PCB with the right GERBER.
Work is done now (#PixelAvenue will open next week)
The LEDs though are a different story. I needed to decide which type of LED I will commit to, from now on. With or without the integrated Zener ?
- With Zener : the routing is much easier but must be re-done from scratch and luminosity is not as good.
- Without Zener : No need to touch the tracks (less work) and everything works as expected, though routing could (and should) be optimised (next time).
The choice does not depend on me though.
The only way to decide was to see what type of LED I could use from now on. So I bought more of these : https://www.aliexpress.com/item/3000pcs-lot-0-2W-SMD-4014-LED-Lamp-Bead13-26lm-White-Warm-white-SMD-LED-2800K/32353970900.html (note: I ordered "warm white", the Zener are in the earlier "cold white" order).
They have been delivered and I just tested them : there is no reverse diode (just like the previous order). This means that the PCB requires no change and I can move forward, with enough stock to ... whatever :-D