I've made a few posts in the past about "personal preference" or changes I'd like to see such as having the power on the left side of the keyboard, etc.
Something else that wasn't even really that obvious to me was the branding. I know it's been mentioned several times and I also know you're working actively on a prototype, so I apologize if it's too late, but I agree that I'd like to eliminate any branding on the keyboard! I appreciate the "cybervoyager" text on the Space65, but that's about it! Something I really appreciate about the Space65 is that the branding is on the removable colored piece, so technically if we wanted, we could suggest that you create a piece without the branding so we could replace it. In any case, I like the "cybervoyager" text on the back and wouldn't mind seeing "apollo" on the back of this keyboard, but not necessarily the company name.
I know that sounds awful since you're trying to get your name out there, but I just don't think the keyboard is the place for it. Just my 2 cents!