Maybe instead of 12345 it should be the keys GHJKL used for the same actions.. Along with ASDW for moving it'd be way easier than overlapping hands in order to click everything and *usually* mess up ..
right now most comfortable for me is to use mouse for shooting :/ Tried moving with arrow keys with right hand, shooting with 12345 left hand, very uncomfortable
Also.. using 3rd party application that is kinda complicated for some of us to understand in the first reading of the sentence.. are you sure it won't be recognized as something that can be identified as "against ToS" at some point?