Tennis landscape if NextGen and LostGen players swapped ?

[tennisaddict]

Imagine if Zverev, Thiem, Kyrgios were next Gen now at age 25-28 and Nishikori, RaoMUG and Dmitrov were now in their early 20's would it have changed the 2014-17 landscape ?

Could Thiem and Zverev provided more competition to Djok and Fed ? Could they have capitalized Rafa's absence better ? If they had success would they have obliterated the Nishikori's and Raonic's from emerging ?

Is the lost gen really worse than NextGen ?

 

[Jackuar]

Current next gen has more advantage in terms of big 4 being in even more decline in terms of age and injuries. Which gives them even lesser room for any excuses. We can only speculate 5 years from now based on how the Zverev and Co. perform from here on. But looking backwards, I think they'd have been as helpless as the lost gen because the Big 4 wouldn't change.. They'd have still swatted the flies left right centre and all over.