I realize this is a rather anal observation (and, hence, of the lowest priority), but there are several instances of unhyphenated compound adjectives in the text that appears during installation. For example:
This ought to read: "A community-developed, Ubuntu-based operating system . . . ."
Also, in the next screen ("About"), the phrase "single board computers" should likewise be rendered "single-board computers."
That is all. If no one gives, at least I'll have said my piece. 
Welcome, and thank you for sharing your observations. 
Ahh, language… especially English, they’re so very complex. 
If you’d like to contribute the tweaks, how trivial they may be, the installation slideshow is called Ubiquity:
I can’t say I know Launchpad inside out, but it’s an indicator where you can make these changes happen for the next release. 
I am bound to say, I tend to occasionally notice a lack of proper clauses in the sentence structure of text.
Yes, I am also a grammar Nazi…
