I think backups are part of the operational ("ops") side/team and they don't have to use the app to backup it on their favorite support/destination.

You want a (or multiple) start dataset for GLPI? In order to better understand each notions, some dropdowns, etc.?

Can't see any advantage of implementing a Mandilapp integration into GLPI core. It could be done in a Plugin though

What data would GLPI want to share via peer-to-peer?

Please give some examples of use cases that would benefit from WebRTC P2P feature.

Can't see any advantage of implementing a Linkedin integration into GLPI core. It could be done in a Plugin though

Disclaimer: I forked the Room plugin (on GitHub) and is making it up-to-date with new GLPI releases.

You can grab a GLPI v0.84, v0.85 and v0.90 compliant version of the Room plugin on GitHub: https://github.com/C-Duv/glpi-room/releases

Also, why integrate a plugin into the GLPI Core? If the plugin does the job there is no need to make it part of GLPI.

If you think the plugin's features should be integrated into GLPI's core: please explain why it should be, which advantages it would brings, why the plugin-solution is not working (or badly).

Disclaimer: I like the fact that additional features for GLPI are possible via plugins: this makes the GLPI core less bloated.

Why integrate a plugin into the GLPI Core? If the plugin does the job there is no need to make it part of GLPI.
If you think the plugin's features should be integrated into GLPI's core: please explain why it should be, which advantages it would brings, why the plugin-solution is not working (or badly).

Could you explain what theses notifications should look like and/or behave?

Isn't it a extension/duplicate of Add the posibility to put Maps and the option "Ubication" with coordenates and metadata ?

Please write in english on this UserEcho project.