You couldn't simply do an encoding that generates kanji procedurally from the list of component radicals because of the differing placements, and sometimes sign

You couldn't simply do an encoding that generates kanji procedurally from the list of component radicals because of the differing placements, and sometimes significant modifications of the radicals to fit in the kanji. Take the kanji 勉 which is made up of the radicals 免 and 力. You could maybe have a "right half" slot for the 力 radical which would figure out the stretching but the fact that the leg of 免 extends underneath it is something that only exists for that kanji and then you'll need to special case it.