Not sure if it is something appearing in V5, but having embeds from other platforms like the current Youtube auto embeds would be great!

With TikTok and Insta reels hugely taken off the last few years, to have these embedded directly from the link would be a big step forward and increase engagement on posts! It's very hit or miss using these currently on 4 and I appreciate it is probably down to the platform themselves rather than a problem embedding into the board!

There has not been any changes to video embedding so far in v5.  That does not mean it won't ever change, but it's not going to happen most likely soon.  

You can add more autoembeds with plugins, maybe you find what you you are looking for here https://www.invisioneer.org/marketplace/

The best solution for clients would be an easier implementation of additional media sites just like XenForo does.