This may have been suggested already but just a quick idea I had.

Saw some people talking about how they wished they could submit scores more than once a day and it got me thinking. People seem against the multi-submit because there'd be people abusing the feature or simply flooding the markets with lots of game items.

I sometimes get frustrated when I achieve what I thought to be a decent score and submitted it, only to finally get my personal highest a few hours later.

What if the scores were all auto recorded on the player's account for a single day. Then at the end of the day, the highest score achieved (by the person) was counted as the 'submitted' score of the day. That then follows the usual rules and chances of receiving an item of that score tier. The person would then receive that item the following day.

Everyone could still only get one item per game per day, but encourages people to keep playing the games in order to improve their score. If your worried about how the leader board stuff would work, just make it so it displays the previous day.

If the prize tier is dependant on the zone, just make it so that whatever the zone the highest score was achieved in is the one used.

Just an idea and I'm curious to hear what people think!