Why is the concept expressed by the sentence in bold the most important thing? I'm really not trying to be snarky but I don't see it. In what context is the survival of Aikido the most important thing? In my daily life I can't say it makes the top 10. Could you explain what you mean by aiki? To me it seems like "harmonious notion of Aiki" has odd redundancies and it's hard to tell what you mean.
A koryu person would be scandalized at hearing that the survival of your art doesn't make your top 10.
FWIW I share the koryu approach and think that the survival/preservation of the art is the most important thing, perhaps even the only important thing. Everything else - including discussions of personalities - is a distraction. I think this is the healthiest approach to practicing aikido or any art.