Summer Glau doesn't kill shows any more than Ted McGinley did before her. Since most TV shows have short lives, and failed series outnumber successful ones, it's inevitable that plenty of actors appear in multiple failed series, sometimes several in a row. The fact that Summer Glau gets singled out merely shows how memorable a performer she is.
You want her to play Emerald Blair if Hollywood options the movie rights to Only Superhuman
, don't you?