Expect is what I tried to integrate with first. It falls over quite quickly with any kind of app that does anything mildly complicated with the terminal.
How exactly did `expect` fall over?
From what I can tell, expect does not provide the functionality of a stateful terminal server/client under the hood for you so it isn't as easy to grab "text" screenshots of a Terminal User Interface, which is one of the main motivations behind ht (will update the readme to make this main use-case more clear)
I built my own probably not very good equivalent of your thing called icommandlib. I'm going to investigate ripping it out and replacing it with your tool.