When opening a ticket and selecting the Requester, the "plus" button refers to "Import A User" when it would be more practical to be "Add User", so you can add a new user without leaving the ticket. 

We would need a new category called Storage under Assets. It would be easy to maintain our NAS like Synology and NetApp.

It could be usefull to manage not only license for software/computers. For example license keys for appliance, network devices ect.

How to assign a line to a phone?

It would be great when if you wanted to assign a ticket to several users, the "add" button would work two or more times without saving. To avoid clicking "add", "save", "add", "save", "add", "save"... every time.

The simple helpdesk.php anonymous ticket creation form should include an optional email address field.
This would record the same details as an anonymous ticket from email.

There could be a possibility of limiting the Read and/or Change of assets only to "Group in charge of the hardware" or "Technician in charge of the hardware".

Because often the same type of asset (such as computers / servers) can be managed by different teams, and the solution of creating different entities is bad.

The same problem occurs with other objects such as licenses, contracts, documents, etc.

Create a rules engine to link an asset, automatically inventoried wth a user

Add new tab on ticket for related tickets as well as works for changes and problems. By adding a button / link to create new related ticket.

Add the option Vote and Rate in the Knowledge Base entries for democratized or select the better option