Default [Q] Changing stock appearance, and making use of /system

Hi, guys.

1. Does anyone know if there is a way to change the system font used in popups and the settings.apk to something lighter and more pleasant? The stock one gives me comic sans associations. Also I wish the borders on things like the power menu would be thinner.

2. Can you i.e. flash a gapps package to get all the google apps into /system in order to save space on the usable partition of the phone? Since we have a 2.5GB partition there, might as well make use of it, right? Anything else it can be used for?