Welcome to FlyerTalk and to the EK Forum, jhinkchak!
1. Have you selected a seat on the A380? If you're travelling solo, choose a middle seat on the aisle for aisle access. Go to www.seatguru.com
2) 1 hour connection in Dubai isn't really much...about enough time for the aircraft to land, taxi, park at the gate, deplane and go to the gate for JFK. You might have time for a cup of coffee along the way but don't expect to do any shopping (if you do have time, then it's a bonus)
3) If your BLR-DXB is delayed then you will automatically be taken care of (possibly rebooked on the next flight to JFK). However, your flight is part of the wave that arrives in time for the European/North American departure bank so EK does try to make sure the flights are on time. So if you miss your A380, then many will be in the same situation.
Just don't be worried-just show up at BLR Airport on time with the necessary documents on hand and leave the rest to God. Enjoy the Big Apple and the Big Bus!