I like it. Loot isn't remarkable, but that's not the reason I play missions.
Only things I would change:
1) Better death animation. I know the CE is hugely complex, but its death isn't really spectacular enough for such a behemoth. That said, I'm sure the devs are prioritizing LoR and I'm grateful for that.
2) The music should be permanently set as the "Battle Group Omega" music. It just fits the event better, in my opinion.
This could be due to the design of the scoring system players do not play as a team (I thought playing as a team was the whole point of STF's), however some of the players play as 1 entity themselves to score a place on the leader board & thus not as a team nor are they getting green Mk X gear as the team players are.
I can say with a sense of certainty that's exactly the case. For the multitudes of runs I've done thus far, not once have I placed while playing the encounter as intended or as part of the team. The handful of times I've placed was when I was being extraordinarily selfish and flat out ignoring the encounter mechanics.
The highest I've placed so far was the one CE run in which between pumping HYT salvoes, bio-neurals, and heavy tricobalts into the CE, ignoring everyone and everything else, was when I found one of the escort players who was certain to score high, rounded up a bunch of shards, and TBR'ed/PSW'ed the shards straight at that player to either destroy them outright or force them to back off.
That is seriously problematic, no matter how funny it is watching somebody with a Romulan Hyper-Plasma launcher atomize themselves care of a cloud of shards dumped in their face.