More techniques or attacks would make A´kido become another art ; it wouldn't be A´kido anymore
Meanwhile, I think we should introduce more complete attack notions. Indeed, when a beginner attacks me, I don't realize whether my techniques "works" (or not).
I met an a´kidoist who had begun its travel by practicing karatedo. His attacks were really realistic
! He showed me new kinds of atemis, etc. ...
For example, he could hit nine times his uke during a 'chudan tsuki ikkyo ura'
Actually, I think it would more help our techniques "look real" than make us be punchers.
Just a thought