The Features
I love the new killcam, And I love the new indicators. There very handy indeed.
One way I'd improve killcam - Showing the remaining hp of the enemy who killed us to show us how close we were to defeating them.
The Maps
Played both maps....
Rampart is pretty awesome, I like the big open areas alot.
Furnace however I detect a slight problem - The regenerating fire walls are easily camped. By simply waiting for the fire to be extinguished you know someone is coming and can start firing causing the enemy to walk right into your bullets. I recommend moving the regenerating fires away from the control points in order to prevent control point campers from easily abusing this.
In regards to the indicators:
The arrows are far more practical than the icons in the corner, but are cluttery to their more neat/orderly counterparts. In my opinion, I think it best to cut their sizes by half.