suggestion for optimizing system integration

hello!

while portable app concept is very handy, we often need to somehow integrate our portable app in our system, for example, i want to set my system to handle by default zip files with my portable zip app

so, along with each portable app, i suggest that there should be a script that will perform such useful system integration actions, and ofcourse not the other useless system integration that the normal app would do to the system (eg. create files and folders in a folder outside its own, change system files, write useless registry entries, etc)

thanks!