I hope auto-complete would not be completely disabled and that it would be available just as a bottom row of the screen, and by pressing enter on the keyboard we can select the highlighted word, or tap the screen to select any other word.

This is useful if you need to write in a language which you do not know completely and even though you can get the grammar right, the spelling is quite a bit more complicated, such as French for many English-speaking learners.

Ideally, the autocomplete could be turned on or off in the settings to appease both those that don't find it helpful, and those that find it helpful.