That would be really cool. Proctor John said he wanted to push to Houston. Abraham came from Houston, (don't know if that was before Rosita and Eugene, or after). This could fit the timeline, since Fear is set far earlier than the current Walking timeline. I just hope it isn't a cheap 2 minute cameo or something. Would love to see Abe kick some ass again! And giving us tasty and unique one-liners!