Certain settings have a lot more impact on how fun an element is than others. Usually they must be set precisely in order to maximize the player’s flow. Make sure to note these values for later so you know what you can change and what you should avoid messing with at later stages.
In general, flow knobs tend to be those that are limited in one extreme. You can’t make a sniper rifle round travel faster than “instantly”. You can’t make it more lethal than “always lethal”. Try to set these knobs to the extreme without compromising. It is tempting to hedge and compromise because you know you will have to balance their strength later, but the game will be more fun if you find another way.
[To be continued…]