The Hyderabad airport is very impressive, I am told that currently it is one of the best airports in India. What I liked about this airport/
a) The paid porter service at a fixed rate. ( I always was weary of the free service which always resulted in a bargaining match for tips)
b) Baggage was very quick.
c) The airport runs coaches from the city to the airport and costs Rs.150 ( about $4)
d) The airport uses a domain name that makes so much sense. hyderabad.aero . imagine being able to find your airport by just typing the .aero domain extension.
Now I hope I can say the same thing 5 years from now. :)