I'm aware of your scripts, and I'm one actively writer of http://wiki.maemo.org/Fremantle_closed_packages Next I need wiki-page listing all preinstalled packages.
I have found so many useless nokia patches (some are written for Diablo, some are merged to the upstream) that I will try good old "If it compiles it is good. If it boots, it is perfect"
I didn't know that about udev. But maybe optification is not yet issue. If preinstalled packages fit before I hope they will fit after.
I'm not sure what is benefit for very this moment use gcc-4.7-thumb (of course in long term). During process phone might brick often, so flashing should be easy and fast. Maybe this is good time to create own Fiasco-image with thumb-support.