Hmmm...again, not sure of your desired technique...but!
You state you have CIS? You should set up the database and you can update the parts with the part manager. Once your database is set up, place the parts from the 'place database part' option and you won't have to futz around with last minute footprint assignments.
In your last suggestion, how would one know what footprint to load if you were given 0201, 0402, 0603, 0805, 1206, etc... as choices? And how would you know what part to buy? What if you wanted a 50V cap vs a 16V cap? All of this can be quickly solved with the CIS database portion of Capture.