Glad you liked my game :)
To me, the speed is part of the fun of the game, forcing you to think on your feet rather than just crank speed down when something happens. Giving the ability isn't a bad idea for people who are just starting the game and want to experiment though, so something like "Minecraft Peaceful Mode" with speed controls and some other controls might be possible (If you aren't familiar with Minecraft, Peaceful Mode is where no enemies spawn and the ones that do don't attack you)