In UK, we have Pop Idol similar to Indian Idol, Pop Idol 2004 winner was "Michelle McManus". She was 22 stones (139.706446 KiloGram) when selected Pop Idol, why she was selected because she has a voice to die for, she is a natural singer. ( have a look at her pictures www.michelleofficial.co.uk)
Similarly, the criteria for Indian Idol should be singing, singing and only singing, one can always improve/work on his/her makeovers, presentation (this comes by confidence). for exapmle, There was this guy (Sunil Mann ), he was selected Gladrags Mr. India 2004, he was from a small haryana village, did not speak english, was not presentable at all, but he worked on his makeover and went on to win the contest. so makeovers and other things can be done later(these are not hard things to acheive), the only criteria should be singing.
I totally agree with Sonu Nigam, who said, Indian Idol is all about singing, you can work on makeovers, presentation and other things later but first you have to concentrate on singing. Most of the times you will be giving voice to some hero/heroine so makeovers and other things does not come into picture, only thing that counts is your voice and singing.
So, IMHO, Indian Idol 2 should be Amey or Karunya, they are amazing.. have beautiful voice..
Indian janta should vote on basis of singing....
My two cents.... phew