i know weve talked about this before 
but i still dont understand why this would not be integrated, a real working retimer,
1-2 years ago i remember an answer just saying, this interpolation is faster then to do it correct… if it was that simple to make it correct why not?
because right now its almost impossible to retime .prts
Realflow 2012 has succesfully made a retiming tool
realflow.com/2012/index_rf2012.php
i would think that krakatoa being most powerful post processing particle toolset, should include this feature, and even better if we dont have to “save” out a new partition, but are able to freely timestretch our particles as we please…
options in realflow include
no interpolation, linear interpolation, linear interpolation (cubic particles)
it allows option kill at beginning of frame, middle or end of frame for particles dying in interpolated frames,
it doenst have the best graph to do it, but its possible…
it would be a blessing from above to have this working correctly in krakatoa