The New Lost Legacies Event

I think they're just padding things out with the already-in-game rewards like skill books and potions. While it would definitely be nice to have more new items - and yes, I would love more recipes and playable music - I would guess the more likely alternative here would just be a shorter event that gives the same number of new items but nothing else, rather than a same-length event that gives more new items to replace the other rewards. Whether a shorter event would be good or bad is of course something there will be varying opinions on.