If your game, not 3D, publishers even not talk. of cause, 2D can also work, but it is much harder to make a popular 2D game this day. ANd many genres just not available for 2D
Even web HTML5 games already require 3D.
We don't need unreal engine
but need, 3D space, ability to load 3D models, with textures, 3D physics, and skeletal animation will be a big plus like this game y8.com/games/rail_slide
If Construct will become a tool even for just fast prototyping, it will be very very good and will give a great boost to the engine.
I see a lot of talks about this engine youtube.com/watch because they give 3D (fake) from the box, and it makes this engine very interesting for devs