Description/Use Cases:
From the ticket creation UI in Slack that sends the ticket to Zendesk. There is a need to have more fields and the option to make fields mandatory before submitting a ticket to Zendesk. 
What problem do you see this solving? (1-2 sentences)
This will help ensure that when a ticket is created from Slack there is an assignee, and other mandatory fields so the tickets are categorized and assigned to be picked, and reduce the chance of the ticket not being handled.
When was the last time you were affected by this lack of functionality, or specific tool?
The lack of functionality allows for tickets to open in Zendesk without mandatory fields which can create a backlog of tickets without an assignee or other mandatory information.
Are you currently using a workaround to solve this problem? (If yes, please explain) (1-2 sentences)
Have not found one.
What would be your ideal solution to this problem? How would it work or function? (1-2 sentences)
For the UI to have the option for more fields to add mandatory information such as severity. The mandatory fields will help ensure a ticket created from Slack has all the information needed to action the ticket.