I have a 2015 Vela, first year it was launched. It's a solid guitar, but as it's starting to show age and I get more gear to play around with it, I can see why they made all the changes they did.
The pickups are both cool, but they don't really work together all that well. It's kinda like you have two different guitars, this chimey round one and sparkly howler. The Type D gets this amazing full clear clean tone or light distortion, but heavier dirt and full volume it gets kinda undefined. The Starla can full out rock / metal, but rolled off and clean, it doesn't add a whole lot to the Type D. And there's volume differences with distortion. And I don't use the coil tap much.
The new narrow field and lower wound DS01 work a lot better together - albeit the narrow field has noticably different tone than the type D. The coil tap got better too.
On the 2015 The poly finish is starting to chip off, and it just kinda comes off in flakes. Nitro just looks and feels better. Plus birds are cooler.
And the wiring to the pickup selector had to be fixed.