The platform is so easy to use once you understand it! There are many different features available but I have not found anything in particular which doesn't work as expected when using them all together (or individually).
My only suggestion would be more training resources - we could definitely benefit from some live sessions or webinars where they go through everything step by stage instead just having one big "get started" session at launch time? We've been able run our entire site smoothly since launching this system about 4 months ago without any major issues aside form minor hiccups here there & everywhere along the way :).