When you touch someone you "feel" their holes and you combine with their forces automatically so that they go into a hole. Then you do a technique or you bounce them away or whatever. That's "aiki". Techniques are not important; only aiki is.
Are you saying aiki is primarily a sensitivity and response skill?
How do you define a "hole" in this case? When you say holes I immediately think of a weakness or weakpoint in their body structure, form, or balance, or perhaps a strategic gap. Is that what you mean? Or something else?
I agree that individual techniques such as ikkyo or kotegaeshi are of lesser importance - and I can relate to some of the other posts that emphasized the keeping or maintaining of one's "equilibrium" (form, one point, balance, structure, contradictory tensions, etc...). I learned it as 'keeping ones integrity'. But techniques are still important, you have to be able to apply the skill otherwise it's like those monks that could easily be pushed over.