To further refine the question: the falling away of saññā (perception), for instance, may leave behind a sense of wholeness, awe and wonder as there is no longer the conditioned interpretation of the world; there is no longer a tree, a cloud or a person in the sense of their words. All divisions thus cease to be and the tree, cloud and person (everything) are seen in their glorious enigmatic depth and wonder. Forms cannot merely be confined to single words - so I've learned!
In another instance, the absence of rūpa (forms) could produce a sense of emptiness or spaciousness where one is intensely conscious of the space around forms but also sees that this same space pervades the very nature of forms themselves. Note: I'm not referring to 'emptiness' in the fullest sense of the Buddhist interpretation but more just generally.
I believe the trick is to see through all aggregates to make the ultimate realisation.