I mostly agree with you guys. By now, I see no way that acknex is going to make a comeback unless it's completely remade to live up to todays standards.
I still enjoy using it for smaller test or simple tools (like the image processing app I made recently) but in terms of actual game development I'm not sure if I'll keep using it in the future. I do have a 2d (pixelart) prototype that I really like and might use at some point but other than that I'll probably go for Unreal Engine.
But since I'm doing what I do solo, I don't even feel like taking a look at Unreal Engine right now. Mainly because I don't think I have the skill (and time?) to finish a full-blown 3d project
(edit: also UE4 looks really complicated and somewhat bloated to me)