A little research turned up a max cruise speed of 125 KIAS. Now I would assume that this may be due to the Longbow pod on top of the mast. From what I've read it also has over 2 hrs endurance, and a max GW of 4500 lbs (unarmed) or 5500 lbs (armed). Operators have been getting along with slow helicopters for a long time. The standard 206 ain't what you'd call speedy, and it still sells. To add the gee-whiz factor, they could always add some of them new-fangled tv screens in the cockpit.
Certifying it wouldn't be cheap, but they do have quite a bit of test data already available that they could use.
And what would it do that the 407 can't do now?
Not all jobs require a 6 seater. There are many jobs that require only hauling around 2-4 passengers, but need a good lifter.
Cheers