I have create templates for monitoring our proxy servers but found one thing I could not do on the template. I have had to define 2 web scenario's on each host as you cannot use macros like {$HOST.CONN} in the HTTP proxy fields of a template web scenario.
I would like to set it to something like http://{$HOST.CONN}:80

If you add this feature, it would means you can define template web scenarios to test http proxies are actually working. In my case can get a valid page via proxies and get blocked message when trying to access something that should be filtered. I have 12 proxies to monitor so had to create 24 individual web scenarios instead of just 2 if this is available.