Why doesn't BGP...

Sounds much like pathalias from the uucp days :-).

> expired) regarding BGP metrics -- the idea was to have a vector of
> metrics (one per AS hop) instead of a single scalar metric; and allow
> network operators to calculate weighted sums to obtain the locally
> significant scalar metrics. I.e. a network operator may decide for
> himself how to interpret BGP metrics coming from different AS-es
> (or by different paths).

I agree that the current "routing has no relation to congestion"
situation can and should be improved.