I'd like to be able to change the default text in the feedback form. Specifically, the category and the description box.
In the description box so that I can provide guideance or instructions on the type of details I am looking for.
At this moment it's possible to change search description. on the search field try to provide info for your users in it.
Goto Customize and click setup on the search module.
Then fill Search description field.
We consider about adding ability to directly update fields descriptions, inside feedback form.