I would like the minimum size for an led to be smaller!

In the RemoteXY_CONF array, you can change it manually to the size you want

For example here is a project with just one round led

{
  255,0,0,1,0,9,0,10,13,0, // header
  65,4,14,9,6,6 // led_1
};

The size is the last 2 numbers. Change them to 3 and the led will be twice smaller

{
  255,0,0,1,0,9,0,10,13,0, // header
  65,4,14,9,3,3 // led_1
};

The tricky part is to locate the led in the array when you have tons of other elements, but I have explained how to do that in this topic (outdated but still valid for the most part)

Thank you very much!