What if this happened in real life and was actual?: Dora the Explorer:

The series ends after Season 4.
Episodes and specials from Seasons 5-8 (e.g., Dora Saves the Snow Princess, Dora Saves the Crystal Kingdom, Dora's Big Birthday Adventure, The Enchanted Forest Adventures, and Dora's Ice Skating Spectacular) are reworked as one-off specials.
Select episodes (School Science Fair, Baby Winky Comes Home, The Backpack Parade, Isa's Unicorn Flowers, and Let's Go to Music School) are integrated into Season 4.
Neither Dora and Friends: Into the City! nor the 2024 CGI reboot (except the older CGI version) exists.
Go, Diego, Go!:

The series ends after Season 3, with Seasons 4-5 not existing.
LazyTown:

LazyTown Entertainment is acquired by Viacom International Inc. in 2011 instead of Turner Broadcasting System.
The series continues under the Nickelodeon banner, airing on Nick Jr.
Other Nick Jr. Shows:

Popular Nick Jr. series like Yo Gabba Gabba! (2007-2015), The Backyardigans (2004-2013), Wow! Wow! Wubbzy! (2006-2010), Little Bill (1999-2004), Miss Spider's Sunny Patch Friends (2004-2009), Jack's Big Music Show (2005-2007), Oobi (2000-2005), Pinky Dinky Doo (2005-2011), Mutt & Stuff (2015-2017), Sunny Day (2017-2018), The Fresh Beat Band (2009-2013), Max & Ruby (2002-2019), Oswald (2001-2003), Team Umizoomi (2010-2015), Butterbean's Café (2018-2020), Wonder Pets! (2006-2016), LazyTown (2004-2014), Shimmer and Shine (2015-2020), Fresh Beat Band of Spies (2015-2016) Santiago of the Seas (2020-2023), and others continue production indefinitely to become franchises.

Allegations Avoided: Allegations against Bill Cosby and John K. never occur.

As a result: Little Bill streams on Paramount+.
The Ren & Stimpy reboot involves John K.
Animation Adjustments:

Shimmer and Shine remains a 2D animated series.
Abby Hatcher and Nella the Princess Knight continue production, becoming the longest-running animated Nick Jr. series.
Out of the Blue Enterprises:

Nickelodeon acquires the company on March 21, 2005, instead of 9 Story USA.
Super Why!, Creative Galaxy, Wishenpoof!, and Charlie’s Colorforms City (keeping their original storylines and tones) air on Nick Jr., becoming long-running animated shows.
Blue's Clues Continuity:

The original Blue’s Clues continues uninterrupted.
Blue’s Clues & You! episodes are produced as part of the original series.
The final 10 episodes of Blue’s Room Season 2 (Blue’s Farm Playdate to Music Stars) are rewritten as Season 1 episodes, removing Sprinkles.
Blue’s Room continues production with additional episodes.
Dora and Friends Replacement:

Dora and Friends: Into the City! is replaced by LazyTown: The Animated Series (2014-2017).
The 2024 CGI Dora reboot is replaced by a CGI revival of Wonder Pets!
New AU Series:

A Nick Jr. original series titled Jumby: Time Traveler replaces Dora the Explorer's last four seasons, Go, Diego, Go!'s last two seasons, and Into the City!
Nick Jr. Reformatting:

After NickMom’s shutdown, Nick Jr. evolves into a classic Nick Jr./Noggin programming channel.
The Noggin app launches in 2015 but retains its classic aesthetic.
Noggin avoids the 2019 blocky redesign and remains active, never shutting down in 2024.
Additional Shows on Nick Jr.:

WordWorld, WordGirl, Super Monsters and My Little Pony: Friendship Is Magic (keeping their original storylines and tones) air on Nick Jr., becoming some of the longest-running animated series' ever.)

And that way "Viacom" would sell "SpongeBob SquarePants" and "United Plankton Pictures" to "Walt Disney Pictures" in 2003 and "Disney" would acquire "Barnyard" after discovering it on the "O Entertainment" website in 2003. Lincon from "The Loud House" would become mascot of "Nickelodeon" in 2016. So that way "Nickelodeon" could receive an animated short film releasing in front of "Paw Patrol: The Mighty Movie" similar to "Once Upon a Studio" called: "Once Upon a Splat"