Flees are actually some of the best raiders.
1 defender shoots 3 missles, so if you send 4+ spread at a defender, its gg for defender.
They are so fast you can quickly see where any gaps in defence are for opponent.
They can go across any land terrain...
you can tell them to hold possession and they will go invisible and show information of enemy.
Sure, the damage output isn't as great as some other raiders, and their health isnt as great as other raiders either.
But all the Factories are supposed to have variation.
If each lab is to be balanced with every other lab, and the raiders get balanced with each other, and the assault gets balanced with each other... then you end up with...