Rated 5 out of 5 stars

Flash blocking should work like in Flashblock.
Proxy should be changed to manual, not system (or be configurable).
It could be a nice all in one addon, but for now it looks like in it's early stage so I'll stick to Flashblock, QuickProxy and hope this one will evolve...

This review is for a previous version of the add-on (1.8.0.1-signed). 

Scope/Feature Explination

Flashblock functionality is outside the scope of the project, if you want that functionality then use flashblock. If you want that program to have an easy on-off then submit a feature request to that team. Regarding Proxy, it sets to whatever the last "On" value was when you turned it off via QJ, but it is off when you turn it on in QuickJava (off on first install or you change it outside of QuickJava) then it doesn't know the last value and defaults to System. If you turn your proxy on, one time, to the settings you want and use QuickJava to enable/disable it you will get the functionality you're looking for.