So far no expansion has released a garbage-tier beast, meaning that as long as Blizzard doesn't add some intentionally awful ones, Webspinner and Ball of Spiders will continue to get better and better.
I think I would take this card over Stormwind Champion anyday. It can't be SW: Deathed, the buffs are permanent, beast synergy, and you get to use your hero power. Only thing stormwind champ has over it is a bigger body. Yeah it dies to 3 damage but its still worth it.