Yes I would consider adding them for a very high amount of tokens, we’ll see.
As with any MMO expansion, there will be newer more powerful recipes of things such as healing potions to support the higher health pools from advancing to a higher level. So a healing potion that’s great for level 20 today will still be great for level 20 in the expansion, but it won’t be relevant for max-level content. Some current ingredients will be used in the new recipes, some new ingredients will be introduced as well. All of that itemization is not finalized yet though.
I do want to point out that we are at least 6 months away from this coming out, and we have plans for the Defend the Realm event that involve using some of those current items up, so just something to keep in mind.