The bibi-symbols are quite bad for those of us with dyslexia, because mirror variants are so common. Yours are actually worse for that; every rotation of every symbol is present! Serifs could help.
Even when considering the population of people without dyslexia, I can't think of examples of vernacular human alphabets that have many pairs of distinct symbols that are identical under some symmetry. So maybe symmetry is an alphabet design antipattern.