The ability to create multiple campaigns for different audiences is great! I think that it would be nice if you could have more than one campaign per day so they don't get lost in your account or forgotten about when creating new ones.
Make sure you are using all of the features available through this software before deciding whether or not its worth investing time into learning how to use them properly. We were able to see what our audience was doing online with Google Analytics but we weren't seeing everything from Facebook Ads Manager as well which made us feel like there might still be things missing out on.