1. voice acting is a job. people do it to make money and to continue to have money they have to continue to do it so voice actors provide voices for multiple characters.
that is not in any way significant.
And you think people of this forum do not know that? The reason i mentioned the voice actor is that it doesn't seem to be a coincedence that Kyrie looks like Orohime, that Nero's DT looks like Komamura's bankai, and even more that Ichigo's voice actor is acting for Nero.
Your opinion is no way fact.
2. women get kidnapped, captured etc. in many times across all forms of media (including DMC1 and 2)
Yes, but what your mind fail to realize is that when there are many similarities it makes the kidnapping idea in story also seem like a Bleach idea. One idea such as a woman being kidnapped alone is to general to say "There is a connection!", but when there is serveal ideas then it makes sense.
3. old guys being in charge is just common sense.
4. they are both made in Japan (also know as where katanas come from) pointing out that a charicter from a Japanese franchise is using a Japanese weapon is like pointing out that people sit on chairs.
5. "the human trying to be a god' theme is the plot of every single Devil May Cry game except the first one.
6. a brother sacrificing themselves for their sister. also like people sitting in chairs.
7. a pure innocent girl wearing white is also very common in fiction.
8. the similarity between Nero's DT and Kommamura's Bankai is to vague the be worth mentioning.
9. the only major similarity in appearance between Kyrie and Orihime besides wearing dresses that are the same color one time is vaguely similar hair color (another "people sit on chairs" level observation).