The best thing about razorthin is its simplicity to use for all types of users like newbie as well experienced one can easily learn it without any technical support required if they have basic knowledge in programming language such as python or java which are used by this toolkit. I don't think there's anything bad but would want more training material so user will be able to do their job faster than before using other tools available online. It has helped me lot with my work now i am doing image recognition project where we need large amount of images and then extract features out them process those feature into some algorithm and finally run machine learning model over these extracted features.