Thanks for the support, it is under constant development, and i can release a really early version in the next days if you want. It is not well documented yet, but i can do it soon enough too.
Since this engine is meant to be developed for everyone's needs, and you NEED that feature, it seems like a good thing to add to the engine.
I would ask you to suggest that in the forums, to see if it starts being a little more active and a community can start
Im thinking of implementing that sprite engine as a scene graph node, which you can plug in and out realtime, if that suits your needs!
The main architecture has improved in the last days, considering a few new things
Last addition was a new State managing class, which allows you to create your own game screens in the objects to help keep it organized.
Also included a built in state for that classic effect fade in->image->fade out, such as game initial screens for publishers and stuff. It works pretty smooth already. Tested it by loading a directory, and doing a slideshow with all images within it, and it takes few lines of code only
Again, thanks for the support