We recently started to use both Structure Gantt and Effectors. Both seem very useful, but one of the main problems we have with them is the ability to edit the issues fields. In the Gantt we would like to edit the start and finish fields, which nobody uses apart from within the Gantt. In the Effector, we would like to edit a field that will normally be empty (no one will set it, but the Effector). However, we found out that we can't edit a field if it does not appear on the Edit screen of the issue. This is problematic since it complicates things. For one thing, we don't want users to edit these fields at all. Second, it forces us to work with the jira admin to add these fields to numerous screens.
We use also automation for jira, and there we can set any field we want, without needing to add it to the edit screen. This is much simpler for us.