This is what is T20 all about... (even ODIs...) You should keep on updating your resources... Team should be like a flowing river... India got struck with Jadeja, Kuldeep, Chahal... forever and paid the price (lost many ICC tournaments). Finally they needed Bumrah, Arshdeep, Pandya & SKY heroics, slow WI pitches and Choking SA to win an ICC tournament after a decade with the cringey uncles!
Even in tests it is the same issue... Sticking to oldies for way too long, in the name of so-called experience and seniority....
But I somehow feel that Kohli & Rohit are the last two Demigods in Indian Cricket (their predecessor was Dhoni). From now on we will keep producing stars in quick intervals before someone grow to the stature of superstar! Kohli & Rohit came before the prime of IPL, so they are the last legs!
Now thanks to IPL we will keep producing quality cricketers (this is one big positive of IPL), earlier we used to find just one Sachin or one Kumble or one Yuvaraj or one Dhoni for the entire decade! Even hardcore haters of IPL @Bhaag Viru Bhaag should acknowledge this fact!
Even Bumrah and Pant fall in the IPL era, so they are not invincible (Pant is dropped from T20s and Bumrah is anyhow a bowler and is rotated - doesn't play all matches - bowlers were never a bane for India, they usually are good workhorses except Kapil who stayed for bit too longer chasing record)