The new feature "Conditionally show or hide columns in a SharePoint list or library form" is great when working with the VIEW form: https://docs.microsoft.com/en-us/sharepoint/dev/declarative-customization/list-form-conditional-show-hide#specify-conditional-formula-to-show-or-hide-columns

Can this feature be extended to include NEW, EDIT and DISPLAY forms?

It would not replace PowerApp forms, but rather give editors and site owners ability to add very basic logic into their SharePoint forms.

For example: =if([$Category]=='Product Management','true', 'false')
If this formula were applied to a field in a NEW or EDIT form (of a SharePoint list or Library), then the field would only be visible when the Category field’s value was set to ‘Product Management’.

Other functionality to include:
- Specify if the formula is applied to NEW, EDIT and/or DISPLAY forms

- Show or hide a field based upon which form is loaded (as above)
- Required fields would require default values
- Set a default values based upon a formula (similar to hide and show)