You may be right. As it is, overhead usage seems to be on the conservative side in most movies (atmosphere, rather than discrete sounds).

I have the newer in-ceiling M3 grilles that cover the full speaker, and quite like them.

https://photos.app.goo.gl/ARdv2Fd7Vet2FYRFA

Axiom M5HP VP160 M3 ADA1000
Anthem MRX 720
SVS SB-3000 (dual)