My favorite Katy, TX Pho joint offers a variety of combinations of meats in its basic Pho. I recall sliced beef, little meat balls and earthiest of all, beef tendon, or combinations thereof). In my mind, Pho needs tendon.
There's also a "non-Pho" I find appealing a clear broth with shrimp and rice noodles, more than a hint of fish sauce, plus the various conventional garnishes.
can a Vietnamese "expert" provide a name for the dish?