What to look for in an article about the development and production of a shield for Arduino Mega?

Question

Do it yourself

Now I am preparing an article about a successful project for the production (still small-scale) shield for Arduino Mega.
The shield itself is a module for controlling 4 large 8x8 bicolor LED matrices (matrix height is about 6 cm). Additionally, the shield contains an RTC module, an IR receiver, a light sensor, a piezo emitter (“tweeter”), a button, and there are interfaces for connecting xBee, nRF24l01 +, additional Arduino shields. An RGB LED is optional.
The device was developed from scratch - its own scheme, a library was written to work with the module.
What aspects of design and production should be covered in more detail?
Circuit design? Programming? Questions about prototyping and creating the first test instances?
If you have any other questions - leave them in the comments to this question - I will try to take into account all the wishes.

Answer 1

I think the question is more interesting commercial: what profit do you expect? If the shield is popular with the Chinese, it doesn’t cost anything to make a copy 1: 1, but it’s much cheaper than yours. I just have not heard about the commercial development of shields for arduino.
Isn't it easier for you then to add mega to your shield and make a full-fledged device?

Answer 2

It’s better to tell us what problem you solved with this, otherwise a shield for the sake of a shield is garbage, not development.
Also, maybe you had some nuances in the circuitry. Non-standard solutions ... something like that.

Answer 3

The article will be interesting if you reveal the essence of designing the board itself: from the choice of the editor to the wiring.
For example, I have been looking for a bare board layout for a long time, suitable in size and with pins. I had to draw my board anyway and mark the conclusions. Just for fun.

Answer 4

Did the article see the light of day?