You can sell your tokens. Buy the trinkets and vendor them.
Boss tokens? Unbind the items with CE and put them on the AH (many don't sell well, check first). Or spam trade chat & unbind them if you get a buyer.
250 crowns per token though, that'd make Danger Rooms & Treasure Vaults pretty ridiculous. The game should have us earning less crowns, not more lol.
Since we all know that people go as far as multiclienting this would call for obvious abuse, what kind of abuse? Look at this screenshot and think about it - http://cloud.steampowered.com/ugc/559792646475822206/337B3BB7F49D737596B... And you know what would be the result of this possible abuse? Most likely another thing disappearing after 120 seconds like crowns and heat. I would also really love the additional crowns but everyone owns a lot of each token type, i have around 100 totally currently (only that much because i got 2x 5* Dread Skelly Charm, 2x 5* Sizzling Hearthstone Pendant, 2x 5* Radiant Crystal Pin, 2x 5* Royal Jelly Band, 2x 3* Glowing Crystal Pin, 2x 3* Brute Jelly Band, 2x 3* Scary Skelly Charm and lots of materials). We all know that FSC/RJP are really generous with the tokens and i don't really see any reason to further reward RJP farmers. In the past the payout in RJP was even lowered!