Maybe we should have just replaced ascii, horrible encoding were entire 25% of it is wasted. And maybe we could have gotten a bit more efficiency by saying instead of having both lower and uppercase letters just have one and then have a modifier before it. Saving lot of space as most text could just be lowercase.
Like say Ä it might be either Ä a single byte, or combination of ¨ and A. Both are now supported, but if you can have more than two such things going in one thing it makes a mess.
That's fundamental to the mission of Unicode because Unicode is meant to be compatible with all legacy character sets, and those character sets already included combining characters.
