I'm wondering if anyone is providing a solid solution for creating New Network User Account Request forms, and attaching workflows to them to automate account creation?

I'm currently investigating a number of options, but am surprised that such a ubiquitous task hasn't been solved a dozen times over and thoroughly documented. Or at least isn't integrated into current off-the-shelf change management and ticketing systems.

Ideally, I'd like for our current ticketing system, ServiceDesk+ to present a standard 'New User' form to department heads, which they can fill in with the required new user details. This triggers a workflow that submits the request as a ticket that can be reviewed and actioned. Actioning the ticket triggers a workflow that creates a user in AD with the details provided, and notifies the department head upon completion.

All told, a pretty standard requirement that I'm sure most organizations have. What are other people doing to accomplish this?

Edit: I should add, I'm more looking for "supported" methods. As is, I've submitted a number of scripted solutions, none of which have met with manager approval.