In an alternate timeline, the Season 4 episodes would actually air as part of Season 3 as originally planned.
After Season 3 ended in 2002, the show went on hiatus until 2004 where it introduced a new format. There would still be one story, but now Announcer Bunny would tell the viewers to listen for the words that contain the sounds/word families/diagraphs. The first half of the episodes would have segments focusing on the vowels/vowel word families, while the second half would have segments focusing on the consonant sounds/consonant diagraphs.
The fourth season would've had 15 episodes with Welcome To The Busterfield Library as the season premiere, and Little Bo Peep as the season finale. Season 5, which would've also had 15 episodes, then aired in 2005 with Never Fly Again as the season premiere, and Mother Goose's Stories as the season finale.
Then Season 6 (20 episodes) would air in 2006 and Season 7 (also 20 episodes, and the final season) would air in 2007, a few months before Lomax, The Hound of Music (which would've run for four seasons) began airing.
In total, the show would've had 140 episodes. What do you think?