Handling advantage prerequisites where you need to e. g. kill a monster for

[elyukai]

Der Vorteil Drachentöter macht auf der Erfahrungsstufe keinen Sinn, weil du noch keinen Drachen getötet haben kannst

Nein auch keinen Basilisken"

How would you handle them? Currently, you can just buy them. Do you think it would be better to have some kind of settings where you have to say that you killed e.g. a dragon? It wouldn't show those advantages then if you haven't activated the respective settings but in contrast it might be less obvious these advantages exist and especially what these settings are for if you don't want to put info texts everywhere. What do you think?