Please Add an Adjustable Slider for Mob Spawns (And More)

I have my own reasons for opposing the new light level changes regarding mobs. I prefer a challenge and I believe it is in the best interest of games such as this to have moments where the players must choose to take risks such as mining large caves with the possibility of encountering more danger. If I choose to explore that big cavern I found, I should expect to fight for my chance at easily found riches and ore. But maybe my friend next door disagrees. He may enjoy playing with mobs, but perhaps he prefers less of a challenge and enjoys a more risk-free adventurous approach. The answer is simple: allow us, the players, to decide our own individual preferences for a challenge. Maybe allow us to choose how many mobs may spawn, how far away they may spawn, how often, and even under what light level conditions. It's a win-win for everyone and considering how this game's biggest promise is to allow players to make their own adventures, it'd be logical to also allow players to set the bar for how they wish their adventures to play out.