The only thing I want rare to do with theirs ip's, is sell em. Give them to someone that has the passion and talent to do them justice. Give it to playtonic. Say what you will about yooka-layley, but that game had passion. I trust them with banjo MUCH more than I do with rare.
I reckon the only reason why rare still clings to their old properties, is because that's all they're known for. When ever rare is brought into a conversation, what do people talk about? Sea of thieves? Kinect sports? **** no, they talk about banjo, ki, conker ect. No one gives a **** about what rare is doing now, they only care about what they did back then. If rare sells their old ip's, they're nostalgia bait is gone, and they'll be forgotten.