Within the User Interface OPTIONS, 19 out of 26 are DEDICATED to the HUD.
BEGINNING with "SHOW HUD" (default ON).
Switch that OPTION Setting to "X" and it will NOT SHOW HUD.
Go back into OPTIONS Settings, and switch it again, and it will SHOW HUD.
If it is believed that there ARE any GOOD REASONS for SHOW HUD to be set to OFF, one thing is CERTAIN:
There are PARTS of Warframe which are simply UNNAVIGABLE with "SHOW HUD" turned OFF.
Since there may be, or ARE GOOD REASONS which players do or may have for wanting "SHOW HUD" to be OFF,
but THERE ARE aspects which REQUIRE it to be ON,
there is the OPTION to CUSTOMIZE CONTROLLER with a binding to TOGGLE HUD,
and an OPTION to SELECT between "SHOW HUD" ON, "SHOW HUD" OFF and "SHOW HUD" TOGGLE (with controller).
I am grateful for that OPTION.
It would have been far more than merely inconvenient if the OPTION HAD NOT been provided,
and ANY BENEFIT which having "SHOW HUD" set to OFF brings to ACCESSIBILITY,
would have been practically obviated without the TOGGLE "SHOW HUD" OPTION.
(Oh, wait. I'm getting ahead of myself. There is no such option.
Or is there, and I just an not find it anywhere for some reason?
If it is not there, is there any good reason for it to not be an option?
At least, on the Playstation platform.
Seeing the Game Play Demos during TennoCon Events always makess it look like there is such a minimum an option and a whole lot more on the PC.)
I just remember some mention during TennoCon of QUALITY OF LIFE and ACCESSIBILITY improvements which were expected to be discussed at a later date.