Going to that link shows: "This document is obsoleted by ripe-580." Following the link to ripe-580:
"In the work by Pelsser et al [3], it is shown that 3% of all prefixes cause 36% of BGP updates, and just 0.01% of the prefixes cause 10% of the BGP updates. The aim is to only penalise those prefixes with excessive numbers of updates."
"This document uses experimental data gathered from an operational environment to suggest changes to the RFD parameters to suppress the prefixes that flap the most, while minimising the suppression of other prefixes."
This is a feature that has been requested for several years now. Would it be possible to add a partial implementation which doesn't allow modifying the parameters - either it is on or off? While not ideal, that would be preferable to not having the option at all, and a step in the direction towards full implementation which might not require too much development work.