The Navy is slowly starting to think about developing a next training helicopter sometime in the future. I have asked some questions to leadership, but most of what I got back was "NAVAIR is studying solutions".
For the past 2 NHA fleet fly-ins, the Navy invited companies to bring helos that they are going to propose as new training helos. Bell brought their 407, Augusta Westland brought the AW119Kx, and Airbus brought the EC-135, EC-145 (aka UH-72), and AS350.
I got a chance to fly the EC-145. It was a manufacturer owned version of the UH-72 that they use for training. I walked in to room that Airbus had set up and one of the pilots asked me if I was one of the people to test fly the helicopter. There is only one proper answer to that question. YES!
It is a great flying helicopter, but I just can't see it as a trainer. The autopilot on it is significantly more advanced that Navy fleet helos. I don't know the cost per flight hour, but it has to be significantly more that single engine solutions. I think the Army is using it because the knew they needed a new aircraft that that was the only other one they had.
The Bell 407 was the clear front runner. They were doing full autos (I don't feel like this is a requirement, but it doesn't hurt). It had a G1000 console. The pilots even folded the rotor blades one night. (This is actually a pretty big deal. Our hangars aren't designed to fit palm-treed helicopters. And they can still be trucked back.) They even painted in orange and white.