Is this possible, feasible, or realistic? I kegged an IPA without cold crashing it first. It’s fully carbed, and tastes delicious, but the visual is less than stellar. Could I add a charge of gelatin solution (i.e., mixed/prepped as if I were just racking into the keg) to the top of the liquid in the keg? Will that have the effect I expect & desire, or will it be a non-starter?
This was just asked! Crazy! 
Yes that will work. Not quiet as well, but will work.
This is almost the only way I use gelatin, pour it right on top of a kegged beer. As long as you don’t move the kegs around a lot once things start settling it works great. Be cautious, sometimes with you can get a huge foamy volcano when adding gelatin to carbonated beer, probably only when it’s not 100% dissolved. Just pour and close the lid quickly.
