I'm not sure if the idea of creating a Crypto Ombudsman might help in quickly resolving open issues. Banks use a similar resolution system and they seem to act quickly when customers escalate problems to the Financial Ombudsman.
Won't help at all. Banks operate within an extremely regulated industry, which can't be said about services operating within the crypto ecosystem. Bitcoin exchanges can always use a lacking support crew as excuse for not being able to respond sooner. Some thing that helps nicely, is to arrange somewhat of a boycott of services not being able to offer users what they deserve. If you want to make a real statement, and make these services feel that they shouldn't mess with their users, it will hurt them the most if you hit them in their wallet. Money is the only thing that talks in this case, and if you make them earn less of that, they will start showing signs of regret and improvements.