Any benefit to publish Terminal Services?

[monsterjta]

Can anyone tell me if there is any benefit in publishing Terminal Servers behind an ISA 2006 server?

I can see why one might want to publish the Terminal Services Web interface using ISA 2006 for pre-authentication purposes, while redirecting the client to a different public IP (public to private static map via Cisco 515E). However, I'm interested in knowing if there is in fact a benefit to place the Terminal Servers behind ISA (ie: TS traffic traversing ISA).

Thanks in advance for any input or suggestions.