I would outlaw noun gendering globally. Does it serve any semantic purpose? It does damn good job at making learning unnecessarily difficult.
It adds some additional entropy without making the words themselves longer. This both helps when communicating over an imperfect communication channel, like talking in a noisy place.
A minor benefit is that references with words like "this" are less ambiguous when gendered, and you can unambiguously reference multiple things as long as they have different gender
They're very useful: if you use two nouns in a sentence chances are they're not the same gender. That makes referring back to them very easy as you can do that by gender only, without repeating the nouns or other complicated sentence structure.
It can be useful, but only in the off chance that they're of different genders. But all this is at the expense of canonically having assigned genders to nouns, which the speaker has no way to compute or derive. In other words, even if I know the very word I want to utter, I can't legally form the correct sentence until I know its gender. All things considered, to me, the cost outweighs the benefits.
> even if I know the very word I want to utter
The gender is part of the word. If you don’t know the gender, then no, you don’t know the word.
There is no way to compute that “dog” begins with the letter “d”, even if you know that the remainder is “og”. So should we ban words that begin with “d”? Of course not. In German you must memorize “der Hund”, not just “Hund”, just like in English you must memorize “dog”, not “_og with unspecified first letter”.