Recommondation for font packages to install

There are so many font packages available, and only a small amount of them are installed by default. I was thinking of adding a few new font packages, perhaps remove some I didn’t have use for.

Could anyone recommend some good font packages available in the OpenSUSE repositories? Or perhaps font packages not in any repository.

I have the following font packages installed:
cantarell-fonts
google-droid-fonts
liberation-fonts
dejavu-fonts
xorg-x11-fonts
ghostscript-fonts
ecode-unicode-bitmap-fonts
intlfonts-euro-bitmap-fonts
gnu-unifont-bitmap-fonts

My LibreOffice have a lot of foreign fonts like Arabic, Armenian and such (depicted by strange characters of the right side of the font name).
I have no use of them, but they are not in a single font package i can remove. I was thinking of removing the following fonts from my system manually (unless someone could come with a good reason for why I should keep them).
Serto
Estrangelo
12of15 Droid fonts

To much work for only a few MB of diskspace.

Only thing I remember of having installed outside the defaullt: indic-fonts.

What are the preferred (best) replacement for Monotype’s Arial, Times New Roman, and Courier New.

There are many to choose from
liberation-fonts
liberation2-fonts
google-croscore-fonts
google-arimo-fonts (Arial)
google-tinos-fonts (Times New Roman)
google-cousine-fonts (Courier New)

The best replacement fonts are the TeXGyre fonts which you probably have installed; you can read about them at http://www.gust.org.pl/projects/e-foundry/tex-gyre/ because the names are not obvious.