BTDT, About giving "THEM" ideas... "THEY" already do enough to make life miserable sometimes.
I am willing to bet that the automotive design geeks lay awake at night thinking up ways to mess with potential DIY owners. Do you think that having something sharp, hot, or both located so that when your "NORMAL" wrench slips your knuckles hit the hazard is purely coincidental? You know that stampings of heavy sheet for parts like alternator mounts or power steering pumps or A/C components and such don't have to be left with serrated edges to slice an errant hand but THEY ARE!
You can buy the $1000 special tool that makes the job easy or you can take your chances using standard tools and get cut, burned, bruised, etc. I'd have bet the under the hood design geeks have competitions on who can make it the hardest to work on with standard tools wielded by real man sized hands (American sized man's hands.) Wherever the nut is there is something behind it to cut or burn you when the standard wrench which doesn't fit into the space really well slips off.
ARRRRGGGGGHHHHHHHH!!!!!!!!!!!!!!1
Pat