So I don't always have the time I'd like for construct, but I was stoked to get to mess around with the 3d features the past month or so. That being said I'd love to see a 3d platform behavior and a 3d solid behavior. The 3d platform behavior is actually easy enough to work around and it just takes some adjusting and testing for a good z speed. 3d solid however is far more important.
Currently solid collisions are only calculated based on the x and y so even if your z doesn't put you colliding with the solid object, your movement is still prevented. Now this can be worked around by adjusting the solid based on the position of the player, however then any other objects using a platformer behavior (enemies or npc) will fall unnecessarily.
Also currently angle only changes in one way. I may be missing something, but rotation on all three axises would also be super helpful.
Not related to 3d. I'd love to see the array an action to load from csv via Ajax. Rex has a plugin, but it stopped working at some point.
If this is in the wrong section I'm sorry