The only issue for Delighted Halfling is the existence of Orcish Bowmasters, which can potentially kill it if someone draws more than one card a turn, and another opponent has the opportunity to Flash in Orcish Bowmasters
If Goofy sees play, it will probably be in a similar role
She also allows Alien characters to challenge ready characters, so coupled with Aliens already in play, you'll give them Challenger +2, and they can challenge ready characters at the same time, and she's not expensive to play either, at just two ink
Again, this card is likely to be a highly-desirable piece for collectors
It now sits at $4.10 at time of writing, after a price rise of 925%
Aside from maybe Blightwing Bandit and Loamcrafter Faun in the other deck, there isnt much here that fits outside of very specific archetypes