HTTP Header fields at connected system level

Hi!  New to Appian, mostly still playing around at this point.

When setting up an HTTP(S) connected system, I couldn't find a way to assign a set of standard header key/value pairs that I'd want applied to every specific integration (endpoint) using that connected system.  I did see you could do it for security, which is great.  But if I wanted to apply other standard headers for a particular API (i.e. cache-control, or some non-standard input required by the API), they would have to be recreated on every integration tied to that connected system.

Is there a way to do this?  Or could this be a feature request?

Thanks!
Dave