I want more ways to control the layout/layers. Like being able to rescale the x and y axis independently from each other.
I want better way or alternative way to pan the layers instead of the awkward parallax. I want to be able to set the position of a layer, also where it rotates(so it doesn't always rotate from the center of the screen).
I want effects to not always act from center of screen.
I want tilemaps to be rotatable and the collisioncells to work well when they are rotated.
I want tilemaps to be resizeable too.
I want spritesheet support- allowing to use a spritesheet instead of individual frames.
I want better shader support that allows multiple textures to be used in a single shader so that better effects can be made- stuff where I can store texture data in one and refer to that to fill another texture and etc.
I want a scale inner and outer options that keep pixels square by rescaling integer based.
I want separation of layer properties from global layer objects, so you can set global layer properties independently of global layer objects.
I want menu features, and stuff that helps facilitate the creation of menus of all types.
I want families to have ability to swap instance variables, or allow instances to reference all possible variables regardless of a family, or vice versa- it becomes a hassle sometimes.
I want more family features and group features.
I want some timesheet? features that help schedule events so that events can be choreographed more easily.
I want better ways to transfer events/etc to other projects to reuse them.
I'll think of some more..
edit:
I want solid behavior to have some parsing, to allow more control over what is allowed to collide with what.
I want tilemap animation features, to allow tiles to be animated.
I want 9-patch allowed to be animated
I want tiled background allowed to be animated.
Most of this is already possible with C2. By default? No, because it could add more processing to games that don't use those features. I'm not saying NOT to add them, I just don't think it's important if it's already possible, and actually relatively easy to do.
Like effects from the center of the screen? Name one that you can't change where their effects take place. Anyways, if you want something like Crystal Ball to be used anywhere on the screen, here: https://www.scirra.com/forum/crystal-ball-extend_t184439
I editted it to use a set UV, so that I could create the minimap you see in my HUD.