Transmigration with an OP system

what the hell is going on! the famous line within transmigration novels, MC-sama died in a very pathetic way (He tripped and impaled himself on a broken metal street sign... like i said pathetic) in accordance to the rules of the afterlife when one dies depending on his/her karma he/she built up during his/her life would decide their fate in their next life, For Example if one had good karma then one could choose their reincarnation or if one had a neutral karma then they wouldn't get as many choices and be rushed along but not overlooked and finally if one had bad karma depending on the level they would be either sent to eternal torture or moved along as they may have just been dealt a bad hand in life. our MC was one with very high karma from being a strong willed, kind person who didn't give up and worked hard to the world a better place. Now here he is after choosing his new life through an all powerful siri or automaton of reincarnation.