I completely agree with that assessment. After a while, any simple encoding scheme becomes mechanical and the images lose their vividness, like cliches. If you make something out of the material, take the wet clay, squeeze it through your fingers and transform it into something that’s your own, you build a very strong connection.
I’ll go back and fool with it some more at a later time - that adds reinforcement.
To me this has a ‘Lukasa like’ feel to it. A big advantage of a sketch is ease of storage, filing paper or computer images.
I have yet to make a Lukasa but the first time I saw a picture in one of your posts, it had a very familiar, friendly feel to it. I felt like I understood it immediately.