To me the two deal killers are the uneven horizontal directivity and the volume limitations even with a sub. Given all the progress that's been made with speaker directivity over the last five years, I see no excuse for any speaker, let alone a monitor whose major selling point is the uniform directivity a cardioid response provides, to exhibit anything less than exemplary directivity down to at least 1 khz. Coming from the superb directivity of the LS 50 Metas, that's simply unacceptable.
And then there's the issue of being able to play loud enough. Speakers with two 8" woofers, and a 6.5" midrange should be able to play down to 100 hz at 105 db with acceptably low levels of distortion (like below 1-2 percent) without triggering limiters especially if low passed with below 100 hz to a sub (s). In short, you should be able to "pot it up, pot it high" once in a while when you're spending nearly $3-4k on your speakers and subs. I don't think that's possible with the Palmer Orbit 11s.
Unfortunate because there are probably some not very expensive design modifications which would allow this framework to achieve those improvements.