Being a retired expat Permanent Resident would make life easier, especially in dealing with the Thai bureaucracy.
It would be nice if retired expats, who have resided in Thailand for 5+ or 10 or so years, who have had no problems with the police/law, who have an adequate annual income, say Baht 1 million, from pensions, investments, etc. be granted PR.
Fully aware that PR, like citizenship, can be revoked by the authorities.