Stevenes Donato develop this plugin:

https://sourceforge.net/projects/glpimobile/

The ability to choose who can use each solution and tasks templates.

In the knowledge base we have the ability to choose the targets which can see some items. We could put that function also on the Solution and Tasks templates. What do you think?

The datacenter / rack view of 9.3 is really great, but I would suggest some enhancements regarding the power and PDU management:
For what I experience, the relation is as following:

Wall Power Outlet(s) <---> PDU Inlet(s) | PDU Outlet(s) <---> PSU Inlets (Power Supply Inlet(s) of Computers/Monitors/Network Devices, etc.

Currently there seems to be no connection between the Rack PDUs and Equipment PSU possible.

So here my ideas:

Create types Inlets and Outles, add them to PDU/PSU types and make connections between them possible: this should be roughly equivalent to the network 'Ethernet port' type.

And some minor other issues with the current implementation:

1) Plug = Outlet? And what does the 'Number' characteristic of a PDU plug mean?

2) It is not possible to add external links to PDUs

Integrate GLPI with No Machine NX Remote Destokp, a real alternative to Teamviewer:

https://www.nomachine.com/

NoMachine NX is an enterprise-class solution for secure remote access, desktop virtualization, and hosted desktop deployment built around the self-designed and self-developed NX suite of components. Thanks to its outstanding compression, session resilience and resource management and its integration with the powerful audio, printing and resource sharing capabilities of the Unix world, NX makes it possible to run any graphical application on any operating system across any networkconnection.

NX is SSH encrypted, has random cookie generation, and is compressed for speed. Free version is available to everyone, and enterprise and server editions are available at cost.

GLPI is very good if you add 2fa google features and more on login page