1. Add Recipes to the list of things you can buy with tokens, or add a new token type that you can buy special recipes with. Not just the weapon, like with Antigua and Sealed Sword and Fang of Vog and stuff, but the recipe for it.
2. Allow boss-drop tokens to be trade-able. Why not? I really don't see why not. Regular tokens drop from crates at random in every dungeon, but boss tokens ONLY drop from boss runs, which are long and repetitive and not everyone enjoys. If someone wants to do boss runs 24/7, let them at least profit from it. And if someone doesn't want to boss run at all, at least give them some way to get the same gear as someone who does.
1. I like trading tokens for (new) recipes, because I like recipes in general. I don't like the idea of players crafting antiguas, sealed swords, and FoVs directly, though.
2. I'll tell you why not. The game ought to have some things you can buy/trade and other things you must win. Currently, tokens and (some of) the items you can trade them for are the only things you must win and boss tokens are the only ones that are based on skill rather than luck of the treasure box.
The boss levels already give plenty of coins and tradable materials. Let's keep a few things just for the folks who actually go out and win them.