havent read everything here, but just felt id throw in my 2 cents as a shielder.
the bec shouldnt do anything to the steel shield. bec is a pierce wep, pretty sure pierce takes a penatly against shields. weapons should have trade offs, the bec is a can opener, not a shield breaker. if you want to break shields, dont bring a bec.
secondly, it would be interesting to see a closer gap with shield durability vs various weapons. swords and other cut weapons do often do too little to shields, while i enjoy my hard to break shield, it might be worth some testing to try increasing the hp on shields but lowering the resistance, that means weaker hits would achieve greater damage, but with the added hp, it wouldnt really break too much faster, its just that you wouldnt run into as many instances of weapons that were unable to harm the shield. and by increasing the hp, the bonus vs shield weapons would not break through the shields as quickly, since they already were only minorly effected by the resistance, so lowering resistance would not make much diff to the damage they did. say you had an axe that normally broke a shield in 5 hits, and a sword that normally broke it in 20. if you upped hp and lowered resistance, the axe might take 7 hits and the sword 16.
could be fun to try some different things in a beta fashion on the dev servers... but overall, i like that people who want to break shields need to bring shield breakers. its just like people who want to kill cav bring pikes... if you want to argue that a steel pick should be just as good at stopping a horse as a pike... well thats a shitty argument; i know you arent saying a bec should be just as good as an axe, but the rock paper scissors element of crpg is good. no one wep or play style should have an advantage against all others. everything has weaknesses, and one of the weakness of pierce/blunt damage guys is shielders who dont get feinted out.