[Neus]

You should be getting Balance from Fluency if you're going to be using tomes, which is -7 weight. You can supplement your maximum BW with Packrat by up to +10. There are enchantments and qualities that reduce weight as well. So, basically, you can get -9 weight easily, while the heaviest tome, I believe, is probably Vorso Verso at 22. You are, obviously, heavily encouraged to be using low weight torso items, or to pump up your STR a little bit. It's an intentional design choice. Don't really think this is a balance issue for that reason.