@ACG
Ah, they were cool! Why haven't I seen these before...
Thanks! You can see more like those [img=http://forum.arcanewonders.com/index.php?topic=13136.0]http://here[/img]. I haven't posted any more since becoming a playtester, though (at least not in the public forums).
In general, there isn't really anything inherently wrong with spawnpoints without channeling; as with other cards, it is always just a question of balancing the cost with the benefits. If the spawnpoint has no channeling, it should probably have some other unique benefit, to compensate.