As much as I enjoy looking at the new picture books when they come into the library, it often seems they are written to show off the cleverness of the author, rather than delight and instruct the children. It wasn't always that way.
But recently I've been interlibrary loaning every Church Mice book I can get, by Graham Oakley. We used to have those where I work but they stopped circulating and had to be removed. He began the series in the seventies and they are dated, but since I remember that era (well!) I can relate, and they. are. so. hilarious. If you need a good laugh, and are of a "certain age" they would do the trick.
They're more wordy than the average picture book and the illustrations have lots going on. It may be that Mr. Oakley was also writing for the adults' amusement, but I'm pretty sure that kids would enjoy these stories, too.