Hey Epic,
First of all thank you for UE4. Also thank you for betting on your users and implementing a royalty business model. 5% is not much to ask for the value you are providing.
Just a small feedback: Blueprint Props, that are accessible through Components and Event Graph tabs of the blueprint editor is a bit of a confusing name. It includes very important architectural setting such as implemented interfaces and inheritance (parent class). While browsing blueprint communication level at content examples project I spent a lot of time trying to see where the implemented interfaces are listed and how to change them. In the end googling helped, but it still feel out of place. Is it possible to either rename it (to Blueprint Settings or Blueprint Setup or some other more descriptive name) or move Inheritence and interface options to, say, defaults tab?
One more thing: KEEP THOSE TUTORIALS COMING! Please do some advanced tutorials. I appreciate Zak explaining what variables are but I believe those type of things are explained everywhere over the internet, and anyone working with blueprints should read at least a very brief, introduction to programming. What we WOULD also like to hear are things such as: when is it better to use interfaces vs plain event dispatchers vs directly invoking a function in another actor? What are some tips and trick in regards to building an interface or class or blueprint that can be reused frequently, instead of reinventing the wheel every single time? Common pitfalls and good patterns while solving a specific type of problem. Bottom line: please do some advanced tutorials.
Thanks again,
Irakli