By "I" I mean all the people who don't have families. If there was actually a way to enforce families first (which'd be a good name to market any changes, although would be open to "What about Fans First?" responses) then it may be alright, but there simply isn't. It's just impractical.
And if I'm walking or cycling, both of which the club like as their free? Or if I'm on one of the coaches which, as far as I know, only do a single trip so there's no advantage for families to get on quicker.
That would be next to impossible to enforce, and even if you could you'd have loads of people milling about near the queue to get on the non-family train and generally getting in the way.