Here or elsewhere I think the title of Unity was mentioned as problematic, due to the Unity engine mucking up how searchable it is and IP issues far down the line. I personally think it is a strong title and that IP issues are unlikely. However, if problems do come up, here are some strong words...
Arguably there is no proposal to mix all the games, so much as there is a bit of a click-bait-y headline.
There is a pretty stark difference from giving credit to inspirations and trying to cluster-pack all those games into one. Unity will no doubt tick some of those "packing game elements...