the five manipulation eyes (theoritical)

Why should they have issues breaking 5 connections if they learned how to break one?

because that one not necessary mean u. it might be one of the fake connections.

The attacks that I have in mind like end-to-end correlation attacks should work either way.

yeah it should , because this idea is not solving this attack. but it will solve other attacks like for example sniffing attacks , or using manipulated pages for sign in and …etc. so we will lower the opportunity of the attack to keep focus on one point of anonymity which my surfing and instead we make it five points of connections = making it 4x to 5x harder.

These other Tor connections would also have to send dummy traffic.
Otherwise it would be clear which Tor connections are just idle and
which actually generate traffic.

yeah sure. and this idea, the workers on it (if we assume it is going to work) will have away to find out how to make them all look-a-like.

should i mention this to Tor community ? btw i have mailed them couple days ago (different subject) , but they didnt answered me. is the place “trac” fine for theoretical ideas ?

Idea proposal of a "Fake-Workstation"

yeah this idea argument will be on the fingerprints , but my suggestion is all about Tor connections.