As the title says, add an setting you can toggle somewhere in option’s “Game/Hud”. This setting makes it so you have to press spacebar/jump a second time in the air to activate the jetpack. Every jump afterwards before hitting the ground will still activate the jetpack.
I’m suggesting to make this an optional… well, option because not everyone will like this change, some might prefer the jetpack in its current state so this change will be helpful to everyone.
The reason for the double tapping idea is for players like me that always want to have a jetpack equipped for easy travel, but don’t always wanna shoot straight up into the air every time they jump.