I'm using AD since summer 2014 and I think updates are very slow. 3 years, I can't believe it ! I was thinking 2 years but no, it's 3 years. Between first beta and now, the significant updates for me are symbols, text on path, corner tool and pivot point.
I must explain my job : I'm working for horology and I'm drawing dials, cases, hands, straps, all we need for a watch. I already love AD because it was so easy to change colors. A very big time saving compared to Illustrator. And no more crashes with heavy files.
But it was not easy to draw. New versions works pretty well and I use symbols a lot (draw an index, duplicate 12 times and after very easy to modify). Pivot point for rotation was a liberation. I always do rotations, it's the base in horology ! We now can do the same with scale.
But today, no decent mirror tool. I'm fed up of this ridiculous and stupid mirror tool. I must use a bounding box to get what I want. Two clicks for defining axis and let's go !
We can't change point 0 on art board.
No blend shape tool. I use it a lot for guilloché.
No deformation tool.
No offset tool.
No tool for simplifying paths. We often have too many points we expand strokes.
No spiral tool
No arc tool
No measurement tool
No vectorize tool
I'm also doing 3D with cinema4d a lot of tools / functions would be great for AD. Have you ever seen how powerful is mograph in c4d ? Basically, it's a duplication tool but you can add a lot of modifiers (random is the most evident). It could be awesome to get the same.
Idem with particles and modifiers.
Moving rotated objects in world or object coordinates can also be useful.
Initially, AD was only for mac OS. But the market is at the overside of the street… I don't want to blame you but development seems slow down.
No news about the InDesign killer. Xpress is coming back with nice features but costs 830 €…