I thought about this a lot and I would LOVE a template for making *animated* fonts where you draw one animation per glyph with a simple UI. It'd be a bit involved so no plans for now.
For now you could draw one character per frame (the image would have to be a bit low resolution to fit them all in one file, or you can break it up in several animations). For rendering the text hmmm ideally you'd make a shader that takes the right rect of the final texture (you can save the animation as a sprite sheet) depending on the glyph, or somehow pipe into the existing text rendering pipeline and convert the sprite sheet into a texture with each glyph in the same place in the texture where unity expects them to be.
Send some updates on your progress!