Vince, QDK, Davies, Conway, CDG, Whiteley, Garton, Jordan, Archer, Briggs, Mills still looks very tasty to me. With Dawson and Overton as a couple of excellent reserves.
We could look at Waller or Lintott rather than Briggs, if we wouldn't something less conventional. But at least for now, I favour sticking with Briggs' experience.
Being thrashed is never nice, but at least it was to Rockets. Of the other seven, they and Oval easily look the best sides to me. And that's hardly a surprise. When at full strength, Notts and Surrey are probably the two strongest t20 sides. Trent are Notts with added oomph. Oval are Surrey with added oomph.