Hi Andy,
xlSlim only works with 64-bit Excel and Python, I have updated the docs to reflect this. I use Advanced Installer too, it seems to be one of the best alternatives to build a nice installation package.
Your add-in looks neat, you have targeted a good audience.
Please do download xlSlim and let me know your thoughts. I have tried to make it as easy as possible for end users, no code changes, additional packages etc.
Regards,
Russel