Re: We could gather some improvement ideas here (and show them to devs?)?
Kubuntu still uses the Ubiquity installer, same as Ubuntu, doesn't it?
You don't have to download the language packs. There's a "Skip" button if you hit the little expanding triangle.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.