@Maple4Blender As this would make every hand opening/closing look the same I would not use it. I prefer having a fist and open hand pose in my pose library to dial it in.
@w245productions Looks cool! Some ways to improve it would be to not just go from one pose to the next one (Idle) but add keys inbetween to make the whole movement move in an arc instead of a straight line.
For the attack make the start slower, the actual swing rly fast and don't stop abruptly :)
@TheRoyalSkies Cool video. Gotta say though Tween Machine has been a thing in Blender and Maya for ages. In Blender just select a control SHIFT+E and move the cursor to the left or right. You can even SHIFT+E and combine it with G+x to just tween the x location for example.