Pluggable Functions Question

Due to the way pluggable functions are defined, I understand that it’s not possible to call an overridden function from my override function (eg – my_override_function () { overriden_function() }). I also see over on trac that there are comments about pluggable functions going the way of filters.

Is that going to happen? Will more pluggable functions become filters instead? If so, is there any sort of release target?

If this was decided against, would people be open to a change that allowed for pluggable functions to be called from the overriding function?