i've been looking at ff2 and i couldn't find anything new. every single feature stated as new was already present in 1.5 using extensions like antiphishing, feeds, etc.
it seems more like the extensions went into the core. but, do we want a huge monolithic core with lots of features or a smaller one wich i customize with extensions according to my needs?? my veredict: i'll stay with 1.5 for a while!