Is there any plans for this to be used in other engines or is it only in blender because the other 3d engines offer better things and blender is not really good for beginners.

There are no immediate plans for this but if I port Sprytile to a commercial 3D package it would be closed source and paid. It would be the only way it makes commercial sense for myself.

I know of a few people who started on 3D using Sprytile, so Blender is not an insurmountable thing for beginners and there are a lot of resources to get people started.