Where is the 5.5E content actually coming from? Are fans submitting ideas somewhere?
Fans have been able to submit community feedback to wizards on their website for years now.
- There are the feedback surveys on UA articles.
- There is the adepts program on DM's Guild where people can have the chance to have dialogue with actual Wiz developers.
- Wiz constantly brings in creative consultants that are prolific or high-profile content creators, you can see them get credited if you read all the acknowledgements in the books. Or just go on the official DnD youtube channel and see them all running games and talking there.
- Parts of the adventurer's league are involved in playtesting, and giving feedback.
Wiz employees do actually engage with the wider audience on social media. They see what people are making noise about and what issues come up again and again. Sometimes this leads to things that I feel are missteps in development, but then I've sworn off using twatter, and even the idea of giving my honest opinion to the people that make the game I really love can't force me to use it.
Basically Wiz is aware of things that need refining, as long as you talk to people or listen to people who are in the community it's impossible to miss certain things that have people disgruntled.