Going back to some of what was said about Kito Ryu in HIPS and what I have gleaned from some historical Aiki research, Aiki waza should have the ability to totally anchor ones attacker to the ground on contact (To - falling), or float their weight (Ki - rising) on contact so balance is taken totally and immediately on contact with a person who has the right skills. A third expression of Aiki waza (and attributed to internal training I think) is that skill of "disappearing" when one attempts to strike or grab, part of which comes from manipulation of ma ai (space) and leading of ones attacker. Another part of this comes from skill in powerful, sudden, relaxed, fully controlled movement.
This reminds me of the symbol of Shodokan - taken from the Ten no Maki of Kito Ryu -
The last line in Tomiki's descriptions says "This symbol is composed of red representing fire, blue representing water and white representing infinite space."
Imho: Red = Fire = rising (Ki) = floating kuzushi, Blue = water = falling(To) = grounding kuzushi, White = infinite space = ma ai control and leading (effects being "disappearing" and creation of a "void" with movement). These are all found in the Nanahon no Kuzushi exercise aka Nage no Kata Omote.
I may be reaching here but it seems like Tomiki may have left a lot of information lying around in plain sight for us to discover.
Of course I also reserve the right to be totally wrong.