These sound like they might not be hardware dependant? Can you write a script that automatically does this for the given thread concurrency (etc.) parameters, i.e. simply improve the kernel-building function of cgminer?

aren't the lines of code you have to change always the same, just with different numbers? or do the lines actually change with the given graphics card architecture? are yours 7950 radeons? What cgminer settings were optimal for your cards before?

i.e. mine are
-g 1 --thread-concurrency 24000
for sapphire OC 7950s.