Hi Everyone.
I think I was the “user” asking @kaia about the Latin American Spanish Layout.
Since then, and with help of some other entries in the forum, I manage to compile, modify, modify again, and then tune my modifications… Until I got desparate of never getting the perfect layout… And then returned to the original Model01 Layout… 


I got an email from @jesse asking me to try the “Butterfly” key in combination with the Vowels. And he sent me this Layout: 
The blue chars are entered when pressing the “butterfly” key with other keys. So, using the “Butterfly” key, works almost like having another Layer in the Keyboard. So you don’t have to change the mapping, nor change the phisical keys (images) rather than the ones printed in the keys. And it came SO NATURAL to write!!
I think even when writting not only in English and Spanish, like @Titan-C mention, but in German, French Portugese and other Latin languages it should work fine!!!
The trick is to configure a Keyboard in the OS, so the AltGR key is supported. In my case (Windows). I have to set my keyboard in “English United States - International” (The “English United States” does not work with the “Butterfly key”).
As I mention, using this, you don’t have to ReMap any key, and it comes very natural to write.
Hope this is useful to anyone writing in some other languges.
Best regards.
Pablo.