the more flour you use makes them harder, but they soften up in a couple days. I don't leave it too thick bc they tend to spread in the oven, losing their shape of whatever cutter. But being too thin they break easier when decorating.
I used to make all my sugar cookies (decorated) by scratch but I don't like the having to sit in the fridge part when I need to make them. Also, if I need to make 3-5 dozen it saves on time not making by scratch so I can have more time decorating them. I think the roll of sugar cookie dough tastes the same as homemade, just needs a little more flour when rolling out.