It won't be any huge jump, no. Just bigger sprites that would then be more detailed, something like that:
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That's an example from an artist who DM'ed me asking me if I had any work. Turns out he did one commission and then disappeared without ever finishing the second one, but I keep coming back to his portfolio. They wouldn't be as chubby as the example, but that's a rough idea of what I'd like to go with.
That'll depend if Dyun is still on board with it, because I'm not planning to change him. I hired a different artist after HC2 because the guy who did the art disappeared for several months. I seem to have an issue with disappearing artists^^