I like how easy it was just by using their API with our CI/CD tools (TravisCI) we were able do deploy containers into Kubernetes without having any knowledge of Docker or kubernets itself! There are no cons really from my point view but if this would be something that could improve in future releases then please consider adding some more advanced features such as creating networks between multiple clusters etc.
So far nothing i dislike so great product! Just make sure u use all those things they give out free during beta phase otherwise there will not much benefit after release since pricing isn't cheap at first time ;) If your considering buying don´t hesitate because price can get pretty high once paid :) Use them now while its still very affordable!! We used these services mainly due automated deployments when deploying new applications / database servers through ci pipeline which helps us reduce manual effort drastically!!