To improve the user experience and clean up the interface layout and menu navigation can all the unusable buttons (e.g add a task) be hidden from Guests in Edit Only mode?

Really want a setting that will limit a guest to only update fields and add photos.

It would be good to create a Mobile view that was uncomplicated and simply showed the fields that can be edited and attachment option. Remove all other task information. e.g. hide the Activity Tab).

In other words, create a "data entry only" type view.