OP here - back from my last two cruises on the Dream. This was sailing 22 and 23 for us. Almost Pearl. We notice the CMs when they board back to back with us. On recent back to backs there was one time around 30 CMs doing back to back and last July there was a time there was over 200 - they were Disney promotional people doing videos on board.
I find most CMs to be very nice on the cruise, but some are obnoxious (as are some regular guests).
The worst was the promotional video people who did snag all early reservations at Palo and took over bars and areas on the ship, but on our last cruise as well in Skyline a group of CMs would come in every night and take over the air with loud singing and annoying behavior. They were enjoying being there at the expense of the full-price paying guests.
We complained to guest services and did receive a pixie dust of champagne and 100 dollar OBC for their behavior which they agreed was rude. Guest services was amazing on this last cruise and was very apologetic for CMs.
Nothing to stop us from being on future cruises of course - gotta get that Pearl, but we just have noticed more entitled CMs on board recently - may just be our experience though. Now worries either way,
DCL is still awesome.