Hey! I wanted to comment on the whole "optional rules" thing you floated at the end. I was thinking you could possibly separate it into a core book and additional errata, with the errata containing things like what you mentioned (armor eggs, DNA digivolve, etc.) That way, people can decide whether they want/need all that stuff from the get go. Although, having it as an addendum of sorts isn't bad either. In short tho, my opinion - go for it! I'd love to see it! Oh, and one last thing, this is super cool and I love it. I could say more, but I'm rambling as is, so I'll stop here.