A small slideshow on the OS while installing

[teamcons]

Problem

Progressbars are boring
People may miss the basics guide later. But they are forced to watch the logo and progressbar
It may be friendlier to sell them the "OS 8 Experience" while they are waiting.

Proposal

Display some screenshots and explanations on basic usage while the software is installing:
-Wheres accessibility settings
-Where to install driver
-Where to install and upgrade software
-Whats workspaces and overview
-Oh look theres a dock

Prior Art (Optional)

Ubiquity had that a time ago...
Even if it gets outdated, the elementary OS usage pattern is pretty mature already