I would like to have different difficulties for the game, so you can choose how you want to have it
I would make a button to select the difficulty:
Easy:
You have plenty of time, landing speed is reduced by 5-8%, and you get only a bit of reward.
Medium/Basic:
The current difficulty with the current rewards
Hard/Impossible:
Really hard, fast landings, a bit less time and big rewards. It would bring a lot more variety in game and would make it easier/harder and more cozy/challanging