Ages ago, there was an alphabet system which was phonetic in character, but worked by modifying the lower portion of the letters where necessary --- the idea be

Ages ago, there was an alphabet system which was phonetic in character, but worked by modifying the lower portion of the letters where necessary --- the idea being that most recognition is based on the upper portion, and that this eased transition. The modification of the lower half was done to match how other letters which made the same sound were shaped, so again, an aspect which would transfer to normal alphabets. Unfortunately, I haven't been able to find it since that first encounter, and I looked quite hard when my children were learning to read.