Arts are simply evolving or dying.
I think you completely misunderstood the goal of aikido; have you ever read Peter Goldsbury articles in Columns forum?
Aikido has nothing to do with bjj, MMA or UFC
Only very superficial observers would want to transplant the methodology of sports into aikido practice. In the same way - only very beginner and inexperienced aikidoka would want to mix elements of judo, bjj, MT..etc with aikido.
You may like it or no, but Founder meant aikido as misogi, and aikido techniques are tools to achieve this goal. What systema or bjj have to do with misogi? - nothing at all. These arts have simply different goals, so in reality their techniques will develop bad conditioning in the body and mind of aikidoka. Not for nothing Founder got very angry when his uchideshi used judo techniques instead aikido techniques during a class.
One must have very deep knowledge of human nature and did tons of ikkyo when we talk about modification of tools that transform body and mind. We are not here on the level of building speed of entry for a technique, or power of throw. These proprieties are only byproducts
of internal transformation, not primary goals. Of course, you can limit your aikido practice to improve its physical elements only, but then you can’t use word of ‘evolution’ – it will be simply pretentious LOL.