I am also the type that doesn't let anyone die. I find only the early levels are hard. For example, on path of radiance, in level 9 i believe, where you have the two beastmen who aren't ye tin your party but are isntead allied characters, and your assaulting the castle, there are 3 items to be had from houses in the top left. Traversing the sand and getting the items, before the bandits destroy them, was super annoying for me.
Even worse, i had to keep just about all my units moving forward at the time, because the allied laguz were going to kill the enemies and steal experience.
Even worse, because it was early in the game, i only used about 4 characters out of all the ones i had. I don't use anyone that i wont bring into the final level, to conserve experience.
But later in the game, once the characters you choose are all leveled up and strong, you can afford mistakes.
