Using cached headers in ACLs

Hi,
        As I've explained in my introduction, I'm working on changes
        over "cache" statement and refresh_pattern to allow easy flash
        video caching and may be other things. The first thing that I'm
        trying to change is that ACLs used in "cache" would match
        against cached headers. For example, if the cached headers for
        some URL contains "Content-Type: video/flv" I serve that object
        from cache.

        Is there any contraindication if I use cached headers in that
        way?

        Regards,
                Diego

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Diego Woitasen - XTECH
www.xtech.com.ar