Adjustable spray head / nozzle

Graffiti is an art for displaying your unique personal style; but street artist perhaps can display more freely if they had handier graffiti tools that are easier to use.What if we could make some conversions on the spray head so there is no need to vary the spray distance in order to change the paint intensity? Can we remove the unnecessary movement and make the process lean and mean? Make the creation process as our bodily extension?