Bungie decided that the forge exploit wasn't how they wanted us to play the game, so they 'fixed it'. Umbral engrams dropped light levels a bit too high for their liking. That wasn't how they wanted us to play the game, so they 'fixed it'. Their idea is that the longer it takes to level up, the longer we play. Except they seem to have forgotten some people have lives. Most of us don't have time to grind to raise our light level, to jump into a game after work to relax. Only to get frustrated, because you have to grind for light all over again, and again and again. Maybe some day they will stick to one light level and make all adventure stories heroic. Wouldn't it be funny if beyond light went back down to 500, people would crash....hard.