SpamAssassin Rule Actions enhancement

[Gareth]

How easy would it be to enhance the 'SpamAssassin Rule Actions' section so
that you could write a rule based on the smapassassin score itself?
For example :-
SpamAssassin Rule Actions = SASCORE>25=>not-deliver store

The reason being is that I use the low scoring spam options to mark spam as
possible spam and deliver it. High scoring marks mail as spam and delivers
it. I would like to be able to just delete anything which is very high
scoring.

Thanks
Gareth