FWIW, I'm doing the Aikido taught to me by my teachers as filtered through my own understanding and abilities. I come from a lineage that traces back to O-Sensei via Tohei via R. Kobayashi via my current instructors. But *my* aikido is now also informed by all those years of training, my own understandings, and also input from people like Goldsbury, Amdur, Ledyard, Harden, Threadgill, Sigman, and others found here and elsewhere.
None of us are doing O-sensei's aikido in one sense. In another sense we're all doing it. And everything in between.
Me, I focus on trying to be as honest to myself as possible about what I'm doing, why I do it, and what I'm hoping to learn. I am thankful to O-sensei for getting the ball rolling as well as he did as well as to his successors in various realms.
For me any further discussion is more or less like arguing about how many angels can fit on the head of a pin. I've played with guys who float, fluff and get all new-age mystical about the silliest of things (to my view). I've also played with guys from some groups who make Tony W look like a light and gentle fella -- brutal! Me, I'm following the path in front of me. Which was formed by the path I took to get here. Mine.
I am gentle with some but I'm not always like it, but at the same time we don't want to break each other do we? As is often quoted there are many ways up the mountain, either straight up or around and around a spiral until we hopefully reach the top? I would prefer the straight up version, as life is finite, but it much depends on the commitment of oneself and the student and who I have as training partners..... Very few want to find out..... oh yes it can be brutal, but that is part of the course? You tell me....
I have discovered a lot in solo training and then test my theories on willing partners, sometimes it works sometimes it doesn't, back to the drawing board as they say, experiment, experiment, why not?