@Morrus, how much cost do ribbon bookmarks add? They're incredibly common in books published by smaller publishers -- and I always appreciate them -- and I'm genuinely confused why WotC doesn't include them. Are they a significant cost upgrade? And if so, what made you include them?
Secondarily, do you have any estimates on how much more expensive printed end pages are? I see a lot of non-WotC publishers either putting extra art there or useful tables, and it always strikes me as wasted space when publishers
don't print something there, but I have no idea if it's a prohibitive cost.