Akuma and Jin are not simple. I guess Jin can be without electrics, but for the most part they are not exactly simple. Especially Akuma where you have to use meter and land on-hit attacks within the net.
There's always Geese to which I will use next when he lands this Winter. If everything goes according to plan and better working progress, I may drop Akuma (never cared for Akuma anyway to be blunt)