Gambling would be cool, especially with other guardians. Although this could end up a way to trade or gift players items. Imagine though if you could gamble anything, say guns were given a value of the current currency on the table. So you're playing at a table using strange coins and your opponent ups the ante and you can't afford to match but you've already thrown in quite a few coins, wait my ghallarhorn is worth 40 strange coins.....screw it I'll throw it down. That would definitely get my heart pumping!