True, though Pursuit Avenger uses Dex, which means you *can* use rogue stuff with it fairly easily if you want. Heck, my Avenger MCed into rogue for Thievery training, since we needed someone to cover such things.
And, hrm, yes, the Godsworn Avalanche feat does synergize nicely. Though there will, of course, be times that you won't want to push people around, as it can screw over other members of your party due to position changes.
The level 9 daily would synergize nicely, too, as adding damage to Twin Strike is a win.
Brad