Hello,
yes, it's worth installing. I do not like all of the stuff, but it makes things definitely more "real" - if you can at all apply this to a game
As you may have heard before it is a collection of patches, and i really recommend using the Jonesoft nod enabler!
After all you can take out what you don't like, but it makes a new game out of the original SH3.
Greetings,
Catfish