I think it is better to add this on the new construct :
-Bones support
-Exportation on many platform (Mac,linux,window,Xbox360,Window phone, Iphone,NDS and flash)
-Shadow and light support
-Bump map support (2D)
-History support (just like photoshop to go back from the mistake)
-Editing the game in real time
-Video Suppport
-2D Parallax Occlusion Mapping (Parallax Occlusion Mapping gives the illusion of a 2d/Flat surface appearing 3d)
-2D heightmap
-2D Occlusion Culling
-
shockwave effect
-POssibly scripting in Javascript/Lua/python/Action script/basic
-Video playback
-Camera movements
-Multiplane camera if Construct 2 have some 3D feature
-Tweening of all layer
-Conversion graphic or file
-Normal Map
-Reflection mapping
-Screen Space Ambient Occlusion
-Built-in Lightmapping and Global illumination
-Scalable multiprocessor support
-Full unicode support
-Simple and easy to use OOP classes
-Full custom shader support for special effects
-Point sprite, billboard, and minimesh particles can be mixed in one particle system
-Antialiasing and anisotropic filtering up to 16x supported
-Multiple adapter support, with full enumeration of devices and supported rendering modes
-Package that contain script ready for any kind of game (platform,rpg..etc), it mean to be handy and gain some time on dev.
-Better Protection (128+bit encryption)
-Sound system (Digital Dolby, EAX)?
will Construct 2 still be Open-source or Freeware?