Digital BW, The Print

For those gurus who understand greyscale partitioning way better than I do I have the 
following question.  Let's say you printed QTR's ink separation page and determined that you 
would limit the K ink at 50% but noticed that your LK and LLK inks continued to show solid 
increases in density well above 50%.  One could either limit each ink at 50% and calculate the 
partitioning points based on this ink limit or decide to limit K at 50% but run LK/LLK at a 
higher ink limit and calculate partitioning points based on this mix of limits.  Is there 
anything to be gained by the latter?  I was thinking that perhaps one would ordinarily prefer 
to run inks close to their "peak" densities in order to get a less "dotty" greyscale. Does this 
make sense or does it not really matter?

Cheers

Steve