Will India's New Bowlers Take Over the Old League?

No doubt these are impressive swing bowlers but they dont bowl at any great pace. Do we still need to produce mroe express bowlers in the same vein as Umesh Yadav particualry for Tests.
With the emergence of the young pacers. Is it time India starts to look beyond the likes of seasoned pacers Zaheer, Ishant and Sreesanth or do they still have a role to play ?
Ranchi is a new venue in International cricket, also Dhoni's home ground. It seems inevitable that he will chirsten the ground with a special innings?