That got me thinking about Legacy weapons, in one of our campaigns we made a group where everyone was the inheritor of a legacy item (which for people unfarmiliar with it is a weapon that acts as a minor magic item until you perform the rituals to unlock it, then its powers grow as you level up)
anyways, one of the factors was that you'd have to make a sacrifice like BAB, HP, Saves, etc that would be permanently lost as long as it was bonded to you, and would accumulate as it grew in power (to represent it drawing on and intertwining with your life energy). The amounts were fairly minor, and far overshadowed by the powers of the legacy item.
Anyways, we found that because of the items power, many of us were building our characters around it, and getting other equipment to support it and the theme it invoked; my character was a monk/swordsage that studied the Desert Wind fighting style, and inhereted the Desert Wind Scimitar. I found that I was taking abilities and feats that complemented its powers, and often searched out magic items that went well with the fire/wind powers, such as rings of elemental command (fire & air) and a carpet of flying; I had a great time looking to acquire that kinda stuff.
I guess my point is that you still have the joy of acquiring stuff, its just that the focus shifts a bit. IF its implemented right.
So, in other words; you were the sword, the stuff on your character sheet was just the vessel that acquired stuff to make you better? lol, creepy.