I am familiar with Henry Ellis and Derek Eastmans training, but i would categorise their training as a hard Ju-Jitsu style.
That is not a criticism, its my opinion based on observation as a hard martial style. To me it bears no resemblance to the softer more lethal, and what i believe to be Aikido, performed by the likes of Kanshu Sunadomari.
My point is that i believe what is being trained today, is not O'Senseis Aikido.
I doubt if anyone is doing O Sensei's aikido. Tohei's aikido is Tohei's, Sunadomari's aikido is his own. The best we can do is to learn from the best teacher we can and make our own aikido the best we can. O Sensei left behind an art and many teachers, his aikido left when he passed on.
Have you practiced with Sensei K Williams? Both Sensei's Ellis and Eastman were with him in the beginning. He studied with Tohei for a number of years and having been a student of his and taken ukemi from him for many years, I can say he definitely falls into the soft but powerful camp.
Who are you currently practicing with?