Reduce the friction for the repeat users

[GriffGreen]

A lot of steps can be removed

From Phil:

"I already gave some feedback on github, essentially suggesting to improve the UX so that the user has some clue when setting parameters, individually and in relation to each other. In addition, I made a few recommendations so that it’s easier and faster to go through multiple loops of simulation, instead of having to go through useless intermediary pages that feel like gratuitous friction (to the point that while “playing” dozens of times with the simulation, I couldn’t help suspecting that they were meant to actually discourage people to make too many simulations…)."