I have never seen Saha as an international wicket keeper because he is just not good enough. He is supposed to be the best keeper in the country but his keeping sucks. Whever I have watched him, he is either dropping a catch or missing a stumping. His batting is no where near international level. Then again, who are the options for India in keeping department? I know Ojha is there but he is even older than Saha. Is there any young keeper out there performing in Ranji trophy? I don't think Sanju Samson is quite ready yet for International cricket. I have heard name of Uday Kaul but he doesn't look too convincing. We are really lacking a good keeper right now, even a decent keeper.
Saha is a bad keeper? When did that happen? Did you watch him just when he had a dropped catch or what? Saha is a very reliable keeper. In fact, Dhoni was a safe keeper, but Saha is a lot more agile and athletic than Dhoni. Its his batting which makes all the questioning valid against him. But again, Saha is a very classical batsman. And he has lived in the shadows of MSD for too long that now when he is getting the chance, he is nervous about making it count so that no one else stakes claim. He has had a few valuable innings under his belt recently and given more exposure, he should flourish.
And what's with this "young keeper" thing? Anyone above 30 should immediately be put in the dustbin? Give Ojha and Saha their chances. MSD ensured that no one else could be tried. Now that he is retired, lets try out these guys. Age is not a barrier. If Saha and/or Ojha can serve India for another 4-5 years, Samson can come in next and take us forward.
Where does Denesh Karthik rate these days?
His keeping is way below average. And even in batting, he is more suited towards T20 format where cheeky batting style works well in getting some tiny runs here and there, esp. in pressure situations. He is not a long term option at all.
I really don't think we need to play 5 bowlers in India. Outside of India, 5 bowlers is needed. However when you have turning pitches like the Mohali pitch, Kohli should have just had Ashwin, Jadeja, Mishra, and either Aaron or Yadav. He could have had KL Rahul or Rohit Sharma play with a 4 bowler attack.
If you get a road of a pitch in India (which is more likely in the 2nd test, considering Bangalore is the venue), you will need 5 bowlers to force through the wickets. The only time you wont need 5 bowlers is when the wicket is extremely bowler friendly (either a green top or a rank turner). Mohali wasn't a real rank turner. It was a turning pitch with variable bounce. Just that both sides mentally did not adjust to the wicket at all and gave cheap wickets to the spinners.