D&D promulgates a fairly modern, liberal democratic attitude to its laws, usually on top of an idealised Western European quasi-Feudal society. To say the two don't match is an understatement. Without doing a deep dive, you might like to consider how recently your country abolished slavery, and also made it illegal. The two are not synonymous - in the UK, slavery was abolished in 1833, but it wasn't actually made illegal until 2010. If someone owned slaves and came to the UK they were ok for 177 years... but now they face up to 14 years in prison. You might also like to look at the pattern of emancipation, that is giving people the right to vote. For example, in 1780 you had to own property (which didn't automatically mean you were a man, but inheritance laws and property laws made it very hard to be a woman and own property) worth £10 (£1,807 in today's money) but before you think this is not a huge bar to voting, it should also be noted the electorate was actual...
This blog is written with the assumption that Wizards of the Coast lose their marbles and appoint me to be the lead designer for 6e D&D! It's not going to start as a serious play-test build, more outlining the ideas I'd like to see but if there is enough interest it might build up to more.