If you think about it, the psychic powers actually seem to work really well with the target priority of this codex.
If you think about what we know about the powers: Make them do a pinning test-so snap shots at you next turn. Make them lose d3 WS/BS-so almost more snap shots. FNP on 2 units. All of those 3 can be usefull for defence. Then onslaught has its uses and then the next 2 are aggressive powers. Not bad, used right they could be good I think. We will miss the utility from the BRB powers and models like the swarmlord I think will suffer alot because of that but the rest should do ok with the new powers.