I'd introduce 31 and 44 minute episodic cartoons.
I'd cater towards educated demographics who care more about quality dialogue and intriguing world design and freeform storytelling exploration of the world rather than action, on-rails, story-driven plots.

I'd use Titmouse, Ankama and Disney's studio, Warner Brother's studio to create smooth Flash/Toonboom animation.
At the end of the TV credits I'd have a link to my official website showing for 70 seconds.

I'd use the fact that it's animated in Flash to create alternate versions of my cartoon like different color palettes, different soundtracks,  anything I can edit without costing extra money. I'd host them on my website and let the fanbase play around with it.
I'd release the raw files of my cartoons to let the fanbase create content and free publicity.
I'd pay the extra dough to have different english voice actors that go from light children voices to deep adult voices.

For the end credits intead of simply scrolling the names, I'd have pictures and even behind the scenes with the team members behind the episodes.
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I'd sometimes have interactive episodes where you can click to play parts in a different order or skip filler or follow another character. You'd see these especially in shared storylines with 3 different characters about the same story, but in different locations.
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I'd experiment with the pros of Japanese workflow and western workflow. Japs are good at backgrounds, detailed clothes and effects, weird liquid/boneless animation, cutting corners to save money through in-between animators. They're also good at creating filler for their 30 something characters and branching off into alternate series not canon to the main series. But they suck at timing, story writing and character behaviour.

My workflow and production will be heavily based on sketching half finished works. The whole production would focus on pitch bibles, book+script writing, clean animatics for every episode.
I'd have like 300 episodes in animatic form, book and script form and digital artbook form.
My cartoonist's pitch bibles will be done in digital form.
I will never spend my budget to finalize an episode unless it's a worthy vision to dump my money into.
I wouldn't even waste money on comic books unless they paid themselves. Animatics are expensive as it is.

I'd experiment with multiple production processes. For the execution I'd have numerous writers in different areas. I'd have 6 writers assigned to 6 characters to give each of them a true distinct personality.
I'd have a comedy writer, an emotional writer, a world designer writer, an action writer/director, a slapstick director.
A pacing/structure/time management writer, but that's a given when you write a story with multiple acts and chapters.

I'd make "joint collab" cartoon meaning that every 7-10 episodes are handled by a different director and writer with their own humour, personality, style. This would work for episodic cartoons only, of course.
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Originally I had this idea for just specific selected special episodes like psychological , horror, detective, comic book action stories which I really want them to feel different and the status quo team is unable of handling it or I don't want them to handle it in their usual status way.
Some fans enjoy to see ideas handled by a team they got used to, but for me some teams just aren't specialized enough to create a specific experience like I want.
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I'll pay talented writers+directors as much, if not even more than the entire animation team. Story and execution is incredibly important.
Sadly I'd of course go the more cost effective way and try  to train some decent writers to mimick the style of a talented writer than actually paying millions of dollars for a finalized script.
Still, I fucking hate TV show writers and how they obsessively try to go against the atmosphere of the movie.
I'd actually push to pass a new law that if a highly trusted executive tries to micromanage my franchise while I'm not looking he will be sued for the potential money I could have made, not just the budget costs he used.
I've seen countless investors and high-ranking shmucks going renegade behind people's backs.