Thank you very much for the comments! I agree with you the lower case are not only the smaller size of upper case. The evolution is mainly from the handwriting convenience concern. To evaluate a conscript system, two things are very important, input and output. The output is about the reading convenience, the input, the writing. In modern society, with the technology development, people use less handwriting than typing or sound input. I believe a successful conscript should focus more on output than input. (It would be nice if we could balance the two.)
My fonts are actually not that difficult as you said. It is just one type of Print version. It might cause some reading discomfort to some people since most of the strokes are composed of simple lines either horizontal or vertical. However, if you understand the basic font making rules, it is very easy to follow. In adjusted versions, definitely we could add circle, arc, slash etc concepts in as longs as the basic script rules remain. We use the thick strokes here to add some changes and highlight some font features. In my view, it makes reading easier actually. In handwriting, thick strokes could be totally ignored. (I have several versions at hands now.)
The current tones design is only for Standard Mandarin. I don't know much of other language with 6 tones or more. The 5 tones are designed to reflex some tone values instead of simply marking 1-5. It seems diacritical tones are not used consistently somehow so I am thinking of marking pinyin differently in this system. You could find out I still use diacritics in my main conscripts for other languages, English, French, Esperanto etc.