Ok, so some of you think the Milos, Jerzy, Grigor and Tomic generation is crap. You also think Coric, Garin, Quinzi, Kyrgios, Kokki, etc. have not proven themselves so you can't see them taking over.
Question is... Who will? You ramble on, but fail to answer a very simple question. Somebody ought to take over from the Big 4 at one point in time (3, 4, 5, 6 years from now, whatever is your guess). The OP just wants to know in our opinion if the 22/23 yos of today will take over from the current big4 or if they will be leaped over by younger guys by the time the Big4 is gone. It's a simple question, really.
To answer the OP and stay on topic, I think the current crop of 17/18 year olds will not take over from the current Big 4 directly. I think there will be a transition period, and the next Grand Slam winning generation will be the 22/23 year olds of today. I don't think they will dominate for long, though. But just enough to get their 'time under the sun' as the OP phrased it.
Some very nice points made in the thread overall
2014 might be the defining year for Grigor and co. They'll have to start making past the 4th round/QFs at the slams and beat the non-big 4 top 10 players (and possibly even a big 4 member) at a few of the big events.
Also, do you guys see any chances of one (or many) of the Kyrgios gen winning slams at 19-20 years of age? Many seem to assume that none of them will be slam-ready until 23-24 years of age like the Jerzy gen. I know it is too early to predict anything at this point as the young players tend to progress/regress a lot in a few months. But since we are predicting the future anyway, why not have a go
So, none of you think any of the ~17 year olds are prodigious talents?