When I first looked at the YT-2400 it looked like a nice midway between the named YT-1300 and the Outer Rim Smugler. But after further examination I find it makes a better comparison to the Firespray. As we all know 2 agility dice is a lot more than 1 agility. Firesprays can resist damage pretty well.
I have also built entire lists around putting Expert Handling on Firesprays because I love barrel-roll-ing larg ships. It gives them so much manuverability, especially with their rear firing arc. I image that the 360 arc on the YT-2400 will make barrel-rolling even better.
In fact of all the things the YT-2400 has, the thing I am most excited about, isn't the 360 firing arc, or the potential to have a 360 degree firing HLC, or the 2 agility, it is the barrel-roll on the action bar.
The second thing I am most excited about is Dash's Pilot Ability. If there is anything that makes larg-based ships hard it is asteroids. Dash's ability to ignore them is just awesome. If he ends his turn on them, he is going to be able to barrel roll of pretty much no matter what. I think He is going to make asteroid play a lot of fun.
If the YT-2400 has any down side, it is its 2 attack dice. Now I am not one of those players who don't like 2 attack dice ships. I love A-wings, TIE Fighters and even TIE Advanced. But the YT-2400 is going to be expensive enough that 2 attack dice might seen a little low. I am sure I will try out the the HLC turret build, but at 12 points I find it pretty expensive. I don't think the range 1 (can't shoot) area is going to be that big of a deal) but 12 points is a ton; it is a whole ship. I think I am more likely to use something like Outmanuver, or Preditor to up the firepower rather than the bumping it all the way up to a Turreted HLC.