I think the default installer installs too many fonts…
For example, I’m italian and I found fonts for hebrew, khmer, lao (and many other languages I’ll never use) installed.
When I need to change a font (for example in LibreOffice Writer) I have to scroll hundreds of useless (for me) fonts and I can’t find the fonts I need/want. This is even worse in GIMP because it doesn’t have the font preview that LO has, so i need to “blind” choose a font and it usually ends up in a unreadable sentence.
I understand that Ubuntu should fit for all the users of every language, but maybe the installer should ask the user if he wants to install all the fonts or only a sub-set of fonts based on the language they choose for the installation.
Eg. If I choose “Italian” or “French” it may ask to install only the “latin alphabet” fonts and not all the other fonts. A Japanese user may want to keep some fonts for English, but he probably don’t need Hebrew, Bengali or Arabic fonts (or just 1 font per-language would be enough).
EDIT: sorry I just found a similar topic here: Excessive fonts installed by default