Some thoughts on gambling:
If you sell the coupons, money return is about 5x to 10x what you pay. --> never sell the $1000 blue chips, gamble them all.
If you keep the coupons, money return is on average a little more than you put in.
If you have a mint and can make the blue chips, profit skyrockets with gambling.
--> adjust the sell value of the coupons, perhaps?
To claim the coupons, you need casino researched, which requires activities: commercial, which requires the flight plans from a heavy freighter.
If you can take on a heavy freighter, nearly everything you can get from the lower tier coupons is worthless, which is a shame.
Right now it's best to just sell the lower tier coupons right away.
Suggestions:
Make lower tier coupons claimable with lower tech, when the items you could get would actually be useful. Outfits and culture tech is required to get into (higher class) casinos in town, where the coupons can be reclaimed. For example sailor outfit enables the copper coupons reclaim, persuasion the next tier, then seductress outfit one more tier.
Alternatively, casino tickets (item drops, from sharp guy for example) allow to reclaim one coupon per ticket.
Or combine the two - fancy outfit for lower/mid tier, fancy outfit + fancy casino ticket for high tier.
Also: Is it intentional that the corridor provides base functionality [CAS, GAMB] ?