Since this has somewhat evolved into a retirement thread, let me ask for the sake of academics:

If the compensation limit is $265,000, and the defined contribution limit of $53,000 which includes 401k and DC contributions...is there any reason one could not negotiate a hypothetical 20% B fund? 20% of 265k is $53,000.

Of course this negates the tax benefit of a 401k contribution,and anyone earning over the compensation cap would not see a penny beyond the $53k contribution limit...but wouldn't it be advantageous to greatly reduce (and completely end for many) the requirement for a pilot to self-fund in order to reach the defined contribution limit?