A 4pm face-off for Sundays would also mean that volunteers need to be at the arena at approximately 2pm, so this wipes out a significant part of the day and means lunch is much more rushed.
I can appreciate the aims in bringing the time forward but a leap of two hours is pretty extreme. I think a 5pm or 5.30pm face-off would be a good compromise. Yes, we want to attract families with children, but we should not alienate long-term fans (many being season ticket holders) and effectively exclude them from Sunday games because they simply can't make it to the game due to work commitments.
I also wonder whether a 4pm start time might negatively impact on the team - if they are on the road on Saturday there is a shorter period of time for sleep, preparation etc for the Sunday game. Those extra 2 hours could be precious to them. I wouldn't say so much if we were situated somewhere reasonably central, like Nottingham, as all venues are that much easier to get to. In Cardiff we are stuck out on a limb, being the most southerly of the teams in the league