Crocker Park is fun. It has all the stores that you could want in a mall, as well as lots of restaurants, a gym, a movie theater, and a Trader Joe's! You could easily spend your whole day here!
The fact that Crocker is outdoors is a double-edged sword, in my opinion. In the summer, it's fantastic to take a stroll and enjoy the warm weather while you shop! But when its raining, snowing, or cold (usually one of those three in Cleveland), the mood here is totally killed.
From an East Sider's perspective, Crocker Park is a nice mall if you are looking to go to the Urban Outfitters (which is the only one around Cleveland), are in the area, or want a change of scenery/nice outing. Other than that, its a bit of a far drive for stores and restaurants that you can also find on the East Side.
Be warned that parking here can be a hassle if you come at dinner time or on a weekend, so you might find yourself circling the garages or parking far away and walking!
That being said, I'm a fan of Crocker Park! Definitely worth a visit!