Well bros, I'd say there're pros:thumbsup: & cons:thumbsd:...!!
1) Yes, agreed that 2 separate lenses - pros is one can choose to carry just 1 lens and it's a lot lighter this way when using/holding-on...AND the cons =there're times where changing a lens doesn't deem fit - too windy+dusty_surrounding, some sport events, wedding-day=might miss certain great-photo-opportunity and don't say NO too soon...yah...haha...!!!!!
2) Yes, if the "Rumuors" is "Accurate", then, rather 'got' weight and using 77mm-filter if I didn't misread the article...!!!!!
3) Me, hmmm...will only buy if, it can out-perform the AF-18-270-PZD and at a very Reasonable$$$Price..., or else...haha...not gonna even be on my item-list...ya...!!!!!!