Good point(s). I guess it's just a little frustrating that a Hive Tyrant or a Zoanthrope is a "weaker" psyker than an upgraded Librarian. I was looking forward to a Broodlord using Invisibility on a large unit of Genestealers.
On a different note, will people be purchasing both psychic powers for your Tervigons now? 15 points for an extra telepathy or biomancy power could be nice.
On another note, what do people think about Broodlord psykers? If you re-roll until you get a power you can use, that could make Broodlords pretty decent at picking powers. They're BS 0, which means they can't use ANY psychic shooting attack.