I have used open AI gym in my research work, it's very easy to use compared with other platforms such as Pygame etc., which are not so friendly. The platform has many useful functions, including visualizing data of training process through tensorboard etc., It can be connected easily by using Tensorflow backend function provided by scikit-learn package, also this connection could help us visualize our model performance more effectively than just print out numbers directly without any visualization methods. There isn't much about what i dislike at present time because there aren't too many problems faced during its usage. In fact, all things worked well when we were working together within same team. We had some issues related to GPU memory but they resolved quickly once contacted their support staff via email. If you want your project will run smoothly then definitely.