For Design tool, When showing the margin height and the value is in negative, you could also show the substraction formula along side the number for example -450(640-56-28 ) a mesaurement for an Android app , This would save a lot of math computation.
For Feedback
The flow should ideally be a form to collect email and and this feedback form.Not even login. Then using the AI and ML tools we can auto tag the content. When he needs to reply he can be asked to login to save it for the community. Otherwise to login, you can have a direct option too.
Let me know your thoughts @ judeosby@gmail.com