Biggest issue with disability is you cannot start working again, even as an experiment, without losing your disability. It's a lifetime disability.
It should instead be a credit, where earning income replaces the benefit $1 for $1, but if you earn over the disability limit you don't lose your credit permanently. This would encourage disabled people to try and find jobs that they can do despite their disability without the fear of being ruined if the job doesn't pan out. Over time this would help transition the "permanently" disabled into being self-sufficient and make them feel happier and less of a burden on society. People want to feel that they have agency and contribute.
It should instead be a credit, where earning income replaces the benefit $1 for $1, but if you earn over the disability limit you don't lose your credit permanently. This would encourage disabled people to try and find jobs that they can do despite their disability without the fear of being ruined if the job doesn't pan out. Over time this would help transition the "permanently" disabled into being self-sufficient and make them feel happier and less of a burden on society. People want to feel that they have agency and contribute.