wondering why do you like the Request postfix. To me it evokes visions of slow remote requests: misleading.

I agree on the need to reorganize the API, but there are many things breaking in 5.0 already. Is the message to users that they basically will have to rewrite?
Just saying that while we can break backwards compatibility in 5.0 (as we need in many cases) there still is a fine balance to keep mind sanity during a migration. People would be really thankful if we could keep this kind of changes via a "traditional" @Deprecated path.