People would just end up screwing up more tubeends making those slipfits not fit at all.
People would try so hard to wiggle the parts togheter that they end up leaking due to screwing up the nice and tight fitment.
People would complain that the parts dont fit togheter when they try to assemble the pieces in the wrong order.
People would complain about them costing more since that would require more cutting,deburring,reszing,expanding and more instructions(that people wont read)
People would end up calling alot more for assistance.
people would ***** on forums such as this over and over again over what i just wrote except everything they screw up would be TTIs fault.
And the list goes on and on.