Problem:Would it be possible to allow pre-filling of form elements in a new ticket via querystring parameters?
Solution:You can pass URL parameters to pre-fill certain fields:
subjectbodycategoryId (you can get this number from the admin section)
prioirty (-1 - Low, 0 - Normal, 1 - HIgh, 2 - Critical, or custom "priority ID" from the admin section)
Example:
[helpdesk-root-url]/Tickets/New?categoryId=1&subject=test&body=hello,%20world!&priority=0