For tournament games or any other unique schedule type that is played at neutral fields, using default sites is problematic because any time the home team is changed the site on the game is changed to default site of the team, but all games for the tournament will be at a neutral site. If an assigner isn't careful, they will save games with the wrong site. A possible solution would be a level setting for "Use Default Sites?". For tournament levels assigners would leave the box unchecked.
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Numerous clients have brought this to our attention in the past, but John O'Kane with 103651 and 104425 is the most recent and urgent. He'd like it that on certain games (usually all at the same level) that as the home team is changed the site remains what it had been rather than changing to the default site of the home team. This is consistent with the feedback we've heard from other groups.
Default sites is not useful for neutral site tournaments.