The ease in which you can create scenarios, test them easily using different data sets or even use your own custom scripts - is very helpful when it comes down creating an automated script that will run consistently across multiple environments without any hassle at all! Not being able to write more complex tests if needed was not really useful but I guess this would be solved by writing code/scripts etc..
Overall its been good experience so far- however we have realised there are certain things missing like support from cloud services (Azure) apart form AWS also having some issues related specifically towards Windows 10 Pro machines. Automating manual tasks has always taken up significant amount time out my day therefore making automation process much easier than before.-.