It depends. I disenchanted every card I though it'd be unacessary for a future (not predicted tho) desire of playing wild, such as Mogor, the Ogre, Baron Rivendare... This kind of stuff. [...] But I realized it wasn't very good bc 2 months after I decided to get all the cardbacks from adventures... And I needed some of them for specific bosses.
Summarizing, I can't say its a bad or good idea, but think really well when doing it. Will you tryhard on some brawls? Will you need this for PVE? It's not only about Wild, but about the rest.