@dansup ...in your copious free time ...!

I think FLOSS projects often trail in documentation, less fun than code, and needing an overlapping set of skills. I'd include the documentation on how to write compatibility for other potential projects, so others can.

I've not looked to see if there are RFCs involved.

@akareilly
FLOSS has the property that anyone who wishes to attempt a feature may do so, but the corollary is that if it neither thrills anyone nor is encouraged by eg patronage, then the feature will await one of those states.

The documentation tends to lag, I've not done much of improving that, either.

As the general standards and behaviours around accessible design grow more uniform, FLOSS interface programming will absorb them, but it is not in the nature of the beast to lead.