Indeed, there is a lot of content to read!
comparison is great and reflect why you choose Discourse and I am currently digging into these threads to increase my knowledge about different community solutions and find usage problems.
For instance, the lack of private section as described here, which could give Discourse “support ticket platform” capabilities.
Also, I am not very concerned about technical problems now. But I’m starting to notice that for every kind of problems you encounter, “there is a plugin for that” 
The intent was to centralize your current pain points here, but I must admit this is a lazy approach 