I really thought theres a similar item picker widely known, but I couldnt find any, so made my own. Any ideas how it could be improved?

For context: I have an inn where you can order items from the menu on the wall, pressing the button dispenses said item into the golem bartenders chest, who puts it in a chest behind the bar, dispensing it for you on the bartop.

I found this comparator signal converter design, but couldnt really make a better design for activating the droppers once your choice is made and you press the button, so I used pistons to conduct the signal.