The question “what about the kaima and dharma names” is half way off. This is because the main body is the main body of the law (sukyo) where you receive commandments such as the commandment of immortality and immorality and become a monk, and the name is not the main body. (However, the Jodo Shinshu is an exception since it is a special sect where there are no commandments in the first place. I won't even mention it in this answer)
I don't understand this, so the multimedia view of funerals is an amateur theory. Please don't take that kind of thing in between. Even in editorials in Buddhist newspapers, aside from tourism-related articles, “programs and articles that are even slightly social” have been criticized as “low quality” and “lacking basic knowledge.”
http://www.chugainippoh.co.jp/editorial/2016/0316.html
Well, adhering to the precepts is common all over the world in Buddhism. Actually, it seems that even in India, people receive the precepts at funerals after death. Or rather, if you read the link below, it seems that although the shape is different, it essentially does the same thing as a Japanese funeral. At least Zen Buddhism.
http://www7a.biglobe.ne.jp/~zen9you/pada/syokus.htm
I practiced ascetic practices in Laos, and monks also have funerals in Laotian Buddhism (the genealogy of Thai Buddhism). Who said that monks only have funerals in Japan! that's a terrible big lie!
I am of the same opinion that it is preferable to take the commandments during life. Even a day earlier is better.
However, becoming a monk does not mean that you gain an identity as a monk; it is a state where I have left out the selfishness that I am. That's why it works so quickly when you finish who you are as a person and return to nature. Including the memorial service for the bereaved families.
Through sending out close people, those left behind think about their own way of life. In Thai Buddhism, children receive the precepts at the parent's funeral. Whichever subject you receive the precepts is fine, but in the end, I want everyone who comes into contact with those precepts to think about a way of life with Buddhism.
Therefore, I would like you to refrain as much as possible from making your own requests that “I don't want you to do a funeral for me.” No matter how many books you read or watch TV shows or movies about life, you can't learn what's really important. There is no choice but to experience it as an actual experience. Therefore, opportunities for anyone to learn are a series of events that continue from funerals to memorial services, and it is Buddhism that gives that learning a good direction. The essence of a funeral is not a name, but a cocchi.