When Spelling Reforms Work

I've heard a lot of people complain about spelling reforms, and rightly so, considering some of the stupid ideas people have come up with. But how do you make an actual good spelling reform? Also I explain why the letter "ß" exists in German.

Written and Created by Me.
Art by kvd102

0:00 English Spelling
0:33 Worst Spelling Reform Ideas
1:07 Actually Okay Spelling Reform Ideas
1:30 Spelling Reforms Do Happen
1:40 German Spelling Reform
2:31 Why Does the Eszett Exist?
3:55 Changes to How the Eszett is Used
4:34 What Makes a Spelling Reform Good?
5:17 Applying This to English (badly)
5:50 There Are Good Spelling Reforms.

Translations:
Ivan - German
Leeuwe van den Heuvel - Dutch
YOAV - Hebrew
Rubýñ - Spanish
palpatinezw - Standard Mandarin
jailbreakmaster32 - Portuguese