I think I might have to work on the cameos as a separate project entirely, or else this section will never go live. I've created most of the graphics and made a good start on the content as well, but it's no small job just to do one of these games, let alone the whole series.
So what I will be doing is doing a general update to the basic look and feel of the pages, reinstating the Easter Eggs for each game (as I still have this content hanging around), but work on each guide as a separate project.
Which will mean that, if all goes to plan, there will be some progress going online for this series some time this week.
This isn't quite a cameo, but it is one of the very few times something from a Yoshi series game crossed over into the main series. The Power Flower, which first appeared in Yoshi's Story, appeared in Super Mario 64 DS as a hat substitute powerup.