Allow miscellaneous ingredients to be added during whirlpool

I've been making brut IPAs that get enzymes added during chilling in whirlpool. 
For whirlpool additions in general would be good to note temperature of the addition in addition to time.

I have done this a couple of times, though not with an ingredient as temperature sensitive as enzymes.  I have added them in as a "hop" with no %AA so that it does not contribute to the IBU calculation.  It is not perfect and not as clean as your suggestion but it would work in the meantime until your suggestion is acted upon.