Okay, here is something I have been thinking about lately.
In aikido I see at least one thing that has been dropped out of Aikido since Osensei died. That would be omoto kyo. I am curious if there are any western dojos which have a focus on Omoto Kyo, but i doubt it.
There are also two other things that I see having petered off, but vary by dojo.
The first is weapons. There are numerous threads about weapons/no weapons all the time, and I have no desire to discuss that here.

What I would really like talk about is kiai.
1. Who does it in their dojo, and who doesn't?
2. What is the tradition of when, how, where taught by your dojo.
3. My teacher kiaied on occasion vocally and always "silently, through kokyu." Kiai, literaly means a lot of ki, so I guess he was right. I kiai randomly, and have learned mostly from different arts, so my finally question is what do you kiai, (haiya! e-! iei! ho!)
Alrighty, anything to scream about out there?