Well SS2.0 have an smaller footprint to begin with because is modular, you only load the modules you will need and SS1.0 is more like a giant library with a lot of functions...

That's true in theory but if you look at the SS2.0 code a huge amount of it is just a wrapper around SS1.0 which means that it only adds to the footprint

at least it is true for custom libraries - I don't have a lot nice to say about SS2 but one thing that's good is it allows us to make library files more fine-grained than before. Yes you could make a lot of small libraries but it was a hassle to manage them in the SS1 UI