Sneak is OP in general, or atleast npc detection is just bad.
And let me get this right, you actually used the alch/enchanting/blacksmith exploit and then your complaining that it's too easy ? Rofl, openening the console & typing tgm would be exactly the same so you must be able to realise how pathetic that sounds.
They really need to fix the crafting skills, that's all there is to it. A cap on max potion strength, max enchant strength, max smithing improvement strength. Whether they just put a cap on it, or achieve this through other means by dealing with fortify skill or effect stacking.
They should get rid of all the increase blacksmith/enchanting/alchemy potions and enchants alltogether.
instead of scaling everything (skills / perks) through damage, simply make it with more active abilities - crippling shot, oil shot, know down shot etc. stuff like that...would make gameplay more versataile and interesting