Even if I was not that active last time, I still continued to work (not a lot, right) on the physical coins. The result is now that I have far better letters that I used to have.
Also, I'm thinking more and more that it would be better if they were in metal. I have found a solution to do so, that would obviously raise the price a lot, but would also make it far better interesting. I will see if it is feasable. I'll keep you in touch !