So, I got to thinking what I could do to make them better. I didn't want to pull a Sailor Moon and make them young teenagers. That seems to be rather overdone when it comes to this sort of thing, anyway. I also don't want to stick to the original style. I want this to be mine, and have my flare to it. Besides, the situations and themes towards the end of my story would be a bit too cruel to lay on what look like five-year-olds.
Thus we're left with one particular age, one that I think was attempted with the RB redesign though the mature face failed a bit at that with the concept art. That would be Brian's age, between ten and twelve. It's a very uncommon if not unheard of age among fanart of the show, and I quite like it. It's a Cardcaptors age, and by taking that show as an example, you can deal with a much larger spectrum of themes and situations as compared to one with five-year-olds.
Here's the first sketch I did, of Rainbow (of course!):
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