If you think it's worth it you try making a full-length free adventure game
. There's a reason why we don't have much in the way of commercial adventure games that actually try it. For the most part, the world screamed in excitement and joy when the P&C interface was created. So much so that even Sierra abandoned it eventually after LucasArts came along. And after that nobody did it ever again (except for some instance in LSL7, which I've never experienced myself).