Re: Introduction + The missing Atemi
It is an interesting point being made about weight classes. In boxing training generally you don't really put too much thought into the weight class of your sparring partners and the same is true for judo. In the latter, where I was weight class only started playing a role in grading competitions after nidan. I would think that there is good reason to train with bigger and stronger partners no matter if you goal is competition or self defense.
The other point, I think already mentioned, is that striking evolved differently in Japanese jujutsu. Percussive strikes are somewhat foreign and tend to be delivered during the course of the encounter (i.e.. after connection has been made) rather than an exchange/avoidance of blows. IMHO trying to graft boxing punches onto aikido is self defeating and would cause a degradation in both.