They could level a base like there was no tomorrow. But they were easy to kill and it was kind of annoying how you had to manually build their scarabs. It would've been great you had the option just to autobuild them and you could turn it on and off. It would simply deduct 15 (or was it 25) minerals automatically for each one.
Siaynoq's Playthroughs
Anyway, I always enjoy reading about all the latest stuff that comes out of E3 conventions.
Siaynoq's Playthroughs