I like it too, but there are some thing that could be improved to give it that final polish.

For example, the transitions are too "hard". By that I mean, that you have a moving camera and then it suddenly stops before fading out. If the camera were to keep moving during the fade animation, it would already be a lot better.

The movement speeds are also simply linear (from what I can see), there should be some easing (acceleration and deceleration).

Then again those could just be style decisions on your end, so if there is a way to check "Ease in" and "ease out" or if you can do a fade while the camera is still moving, then it's all good.

A little thing I would add is a little loading indicator (like a spinning circle) in the corner of the screen while it is changing scenes, since sometimes the load time is a bit longer than you'd expect and you have no indication of whether it's loading or if it got stuck.

And this is just towards your graphics decision, but bloom is is not the end-all-be-all tool. Tone that stuff down!

Other than that, the toolkit seems very robust from what I can gather, so good job on that! Especially the GUI tools!