It ‘could’ work, but it rarely does.
I think the best thing to do, if you are serious about getting investors and a show out there is to develop a very strong, and original (although from what I’ve seen originality doesn’t mean much to investors, they just want a quick buck) back story with strong characters that can show development through out a number of episodes, or if it’s a really simple 1-3 year old thing then just make them cute, and easy to distinguish, think of character designs like Thomas the Tank, or Iggle Piggle, my 3 year old nephew instantly recognizes them, even from a highly pixelated thumbnail, that is the sort of recognizable character(s) you want.
If you just want to get a show and progress from there think about branching off, toy designs, board games, etcetera etcetera, an investor and/ or studio is looking to make money, so the bigger the potential pot of gold, the better your chances are.
Anyway, once you develop a detailed back story, and characters then go about creating a 5-10 minute production, the quality doesn’t have to be Pixar-esque, but it should at least be polished enough to show of the story, characters and the future potential, for other episodes, and of course the marketing aspects.
I think doing the above, while taking longer, would be an easy task on your own, you will be in full control, which means you can steer the project in the direction of your chosen, something which isn’t easy with team productions.