Thanks!
A huge part of my indie game will be melee (swords, warhammers, shields, spears), so I’m designing a fighting system. When finished, I’ll be putting all the animations on the store. The animations will be pretty much exactly like you wrote.
In the meantime, I’m not sure what UE4 is capable of if it comes to constructing animation controllers, but I made a little scheme that you could take some ideas from. It is helpful in Unity and CryEngine, but I’m not sure if Unreal can make a Blendspace within a Blendspace (UDK could - the whole anim system was based on that):
http://www.kubold.com/wp-content/uploads/2014/10/ControllerExample1.jpg
