Tis' true - squig hoppers are nasty little buggers. The ways to "exploit" them are not really exploits, rather using their unique abilities to your advantage - like the 3d6 movement, charge on touch, immune to psych, etc....I've kept at least 5 in my army ever since I bumped up to 1500 points, and I never regretted taking them. Sure, sometimes they get picked on by long range attacks - low defense and no save make them a shining target for arrow fire, but then I just laugh and think how my opponent just wasted an entire shooting phase to kill 85 points, while my main force has waaaghed themselves into CC.
Squigs are hip!