From the rumors thus far, I submit that Eldar suffer LEAST from the new rules for SMs. Any powers they have still will only be human powers and be unreliable, limited, or equivalent to our warlocks but have to take tests to use them.
Regarding the assault changes they have, if everything isn't dead by the end of the first round of the attack, then you have done something wrong. They still die the same way so I have no objections. 2 cents over