It is likely to cost more for bigger clubs and less for smaller ones. It discourages clubs to be more efficient in field management. For example a 500 member club will be about the same hiring cost for 3 fields or 5 fields so why not get 5 if you can. If clubs don't use a field then they are likely to keep it rather than to give it to other clubs for use. It needs much tougher policing from council the the current system.