I disagree in the shields case. I fought Ironjawz who had quite a lot of rend spread out. Most of it was all 1 with only th boss haing a 2. Came in handy there as for being a tarpit, yes. Theyre ambushers. They're meant to block a charge/spook a unit and divide the enemy. The points for them will likely be 120-140 for 10, but points will need a good looking at once the units themselves are sorted out.