The sheer variety of the human written word is frustrating. I have four proposals to start things off.
1. Each language has lots of different characters, some of them, like Chinese, have too many. I suggest that all languages use an alphabet with a size no greater than the IPA.
2. If you speak with vowels (which everyone does), then you have to write them. They're not implied.
3. No ligatures, none, absolutely not, it's ridiculous.
4. Remove all ph's that are unnecessary. The Italians take fotografia, and so should we.