Positional allography?

[Koen G]

I'd say the puzzling thing is not certain symbols or sequences appearing at the end of words, this commonly happens in many languages. E.g., "-ing" is mostly EOW in English, abbreviate "ing" as some symbol (say, ŋ) and it will mostly appear at the end of words.

Strong disagree here. In your example, words like singer, singing, slings, brings, bringing, bringer, winged... Would all be difficult to form. Let alone the fact that EVA-n would be more akin to the "g" in your example. "G" appears all over the place in English.