When using Program Tokens in an email subject line MSI will show {{my.Subject Line}} instead of the actual value of the token. That defeats the purpose of using tokens.
These are table stakes in our opinion and this lack of functionality means we will need to build out 300 individuals emails to show our Sales team the assets contact/leads have downloaded (via the MSI display)...further we intended to use tokens for other soft assets (webinars, events, etc.) and now this is completely useless (defeats the true value of cloning).