I think knowing the output capabilities of a Sub are important. Seeing the CEA-2010 Burst Test and Long Term Compression Sweeps along with the Distortion Measurements tell you a great deal about how the Sub can perform. Group Delay is good to see, too, just to make certain there are no surprises, though fortunately most modern Subs from reputable companies are crushing the GD measurement.
I agree, no measurement will not tell you how a Sub will behave in your room.
But, understanding what performance you can get is a key thing, especially for some of the guys that want to put more than 4 Subs in their HT Rig so they can hit 115dB strong with headroom to spare.
It's less of a thing for music, though I do know some folk that think Concert Level playback is a thing.
More to the point is that Subwoofer measurement is a different beast and Ground Plane measurements are the way to go. It would be grand to see Ricci and Data Bass continue, but James Larson and Erin have contributed some great measurements and reviews to help us out. It would be nice to see more Subs reviewed, but I get it: Size, cost, time, location and weather... it all comes together and can be problematic.
I know I would love to see 3rd Party testing of PSA Subs, for example. Since they won't send anything out for review, somebody would need to order one specifically to get it tested. Perhaps return it... I know that's not in my piggy bank though!