#1 most of the time we do the work on a mill and looks professional
#2 the middle supports provide little support for the car or batteries (i work for a structural engineer and had a TC3 chassis stress modeled) it also drops more weight than milling the braces to drop CG
#3 NEVER have i had one break
u are entitled to your opinion and i am entitled to mine but i know of 2 of those chassis working quite well for a couple of sponsored guys so it can't be quite THAT bad