There's no need to make a new sphere designed for ha, as there is absolutely no good reason for a psy to be ha.
Okay, first of all, have you EVER thought about the reason why psys got the lowest phy def of all classes? Because they also hit the hardest on average plus the fact that yous got permasilence, 9 secs free expel and 13secs stun really doesn't show you how many options a psy have on tanking.
Second, you shouldn't even think about having a ha psychic. Unless you're maybe planning to be a support aoe psy or cata psy or something? In that case you could've just picked a sphere with lower magic requirements. Pure AA classes does not bode well with HA gears. Only class I've known that's efficient at killing in HA being AA is venos. That's because it's thanks to their curses and 100% armor crush + bleed combo.
And thirdly, why bring this up, at all; being ha for pure dd classes doesn't work on average. Normally a wiz would hit 4-6k on a barb (unbuffed or w/e), with HA gear that's half the dmg. Have fun killing a barb with over 53k hp.
I honestly don't know why this is brang up. HA psy just doesn't work here. Someone explain.